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76020961 = 87192
BaseRepresentation
bin1001000011111…
…11110011100001
312022001021011011
410201333303201
5123430132321
611313220521
71612111312
oct441776341
9168037134
1076020961
1139a03745
1221561741
1312999223
14a14c609
156a19ae1
hex487fce1

76020961 has 3 divisors (see below), whose sum is σ = 76029681. Its totient is φ = 76012242.

The previous prime is 76020953. The next prime is 76021009. The reversal of 76020961 is 16902067.

The square root of 76020961 is 8719.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 76020961 - 23 = 76020953 is a prime.

It is a super-2 number, since 2×760209612 = 11558373022727042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76020941) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4360 + ... + 13078.

It is an arithmetic number, because the mean of its divisors is an integer number (25343227).

Almost surely, 276020961 is an apocalyptic number.

76020961 is the 8719-th square number.

76020961 is the 4360-th centered octagonal number.

It is an amenable number.

76020961 is a deficient number, since it is larger than the sum of its proper divisors (8720).

76020961 is an frugal number, since it uses more digits than its factorization.

76020961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17438 (or 8719 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The cubic root of 76020961 is about 423.6212965557.

The spelling of 76020961 in words is "seventy-six million, twenty thousand, nine hundred sixty-one".

Divisors: 1 8719 76020961