77490693 has 24 divisors (see below), whose sum is σ = 128856000. Its totient is φ = 43956864.

The previous prime is 77490667. The next prime is 77490739. The reversal of 77490693 is 39609477.

77490693 is a `hidden beast` number, since 77 + 490 + 6 + 93 = 666.

It is not a de Polignac number, because 77490693 - 2⁵ = 77490661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77490613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4333 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (5369000).

Almost surely, 2^77490693 is an apocalyptic number.

It is an amenable number.

77490693 is a deficient number, since it is larger than the sum of its proper divisors (51365307).

77490693 is a wasteful number, since it uses less digits than its factorization.

77490693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9001 (or 8998 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 77490693 is about 8802.8798128794. The cubic root of 77490693 is about 426.3338816065. Note that the first 3 decimals are identical.

The spelling of 77490693 in words is "seventy-seven million, four hundred ninety thousand, six hundred ninety-three".