77467997 has 16 divisors (see below), whose sum is σ = 86708160. Its totient is φ = 68781312.

The previous prime is 77467991. The next prime is 77468009. The reversal of 77467997 is 79976477.

It is a cyclic number.

It is not a de Polignac number, because 77467997 - 2⁴ = 77467981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77467991) 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 15 ways as a sum of consecutive naturals, for example, 120158 + ... + 120800.

It is an arithmetic number, because the mean of its divisors is an integer number (5419260).

Almost surely, 2^77467997 is an apocalyptic number.

It is an amenable number.

77467997 is a deficient number, since it is larger than the sum of its proper divisors (9240163).

77467997 is a wasteful number, since it uses less digits than its factorization.

77467997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052.

The product of its digits is 4667544, while the sum is 56.

The square root of 77467997 is about 8801.5905948868. The cubic root of 77467997 is about 426.2922550222.

The spelling of 77467997 in words is "seventy-seven million, four hundred sixty-seven thousand, nine hundred ninety-seven".