76561953 has 8 divisors (see below), whose sum is σ = 109935168. Its totient is φ = 47115024.

The previous prime is 76561951. The next prime is 76561957. The reversal of 76561953 is 35916567.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 76561953 - 2¹ = 76561951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76561951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981525 + ... + 981602.

It is an arithmetic number, because the mean of its divisors is an integer number (13741896).

Almost surely, 2^76561953 is an apocalyptic number.

It is an amenable number.

76561953 is a deficient number, since it is larger than the sum of its proper divisors (33373215).

76561953 is a wasteful number, since it uses less digits than its factorization.

76561953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963143.

The product of its digits is 170100, while the sum is 42.

The square root of 76561953 is about 8749.9687428013. The cubic root of 76561953 is about 424.6238018155.

The spelling of 76561953 in words is "seventy-six million, five hundred sixty-one thousand, nine hundred fifty-three".