77466257 has 12 divisors (see below), whose sum is σ = 85386000. Its totient is φ = 70227960.

The previous prime is 77466253. The next prime is 77466269. The reversal of 77466257 is 75266477.

It is not a de Polignac number, because 77466257 - 2² = 77466253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77466251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59738 + ... + 61020.

It is an arithmetic number, because the mean of its divisors is an integer number (7115500).

Almost surely, 2^77466257 is an apocalyptic number.

It is an amenable number.

77466257 is a deficient number, since it is larger than the sum of its proper divisors (7919743).

77466257 is a wasteful number, since it uses less digits than its factorization.

77466257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804 (or 1793 counting only the distinct ones).

The product of its digits is 493920, while the sum is 44.

The square root of 77466257 is about 8801.4917485617. The cubic root of 77466257 is about 426.2890633641.

The spelling of 77466257 in words is "seventy-seven million, four hundred sixty-six thousand, two hundred fifty-seven".