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76684541 = 563136207
BaseRepresentation
bin1001001001000…
…01110011111101
312100021222102012
410210201303331
5124112401131
611335341005
71620544043
oct444416375
9170258365
1076684541
113a31725a
1221821765
1312b6c28b
14a282393
156aeb52b
hex4921cfd

76684541 has 4 divisors (see below), whose sum is σ = 76821312. Its totient is φ = 76547772.

The previous prime is 76684537. The next prime is 76684549. The reversal of 76684541 is 14548667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76684541 - 22 = 76684537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76684549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67541 + ... + 68666.

It is an arithmetic number, because the mean of its divisors is an integer number (19205328).

Almost surely, 276684541 is an apocalyptic number.

It is an amenable number.

76684541 is a deficient number, since it is larger than the sum of its proper divisors (136771).

76684541 is a wasteful number, since it uses less digits than its factorization.

76684541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136770.

The product of its digits is 161280, while the sum is 41.

The square root of 76684541 is about 8756.9709945848. The cubic root of 76684541 is about 424.8503112984.

The spelling of 76684541 in words is "seventy-six million, six hundred eighty-four thousand, five hundred forty-one".

Divisors: 1 563 136207 76684541