77500897 has 4 divisors (see below), whose sum is σ = 77523136. Its totient is φ = 77478660.

The previous prime is 77500883. The next prime is 77500919. The reversal of 77500897 is 79800577.

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 77500897 - 2¹¹ = 77498849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77500597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4629 + ... + 13282.

It is an arithmetic number, because the mean of its divisors is an integer number (19380784).

Almost surely, 2^77500897 is an apocalyptic number.

It is an amenable number.

77500897 is a deficient number, since it is larger than the sum of its proper divisors (22239).

77500897 is a wasteful number, since it uses less digits than its factorization.

77500897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22238.

The product of its (nonzero) digits is 123480, while the sum is 43.

The square root of 77500897 is about 8803.4593768586. The cubic root of 77500897 is about 426.3525940472.

The spelling of 77500897 in words is "seventy-seven million, five hundred thousand, eight hundred ninety-seven".