77467540 has 24 divisors (see below), whose sum is σ = 162862560. Its totient is φ = 30952608.

The previous prime is 77467513. The next prime is 77467547. The reversal of 77467540 is 4576477.

It is a junction number, because it is equal to n+sod(n) for n = 77467493 and 77467502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77467547) 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 7 ways as a sum of consecutive naturals, for example, 24151 + ... + 27169.

It is an arithmetic number, because the mean of its divisors is an integer number (6785940).

Almost surely, 2^77467540 is an apocalyptic number.

It is an amenable number.

77467540 is an abundant number, since it is smaller than the sum of its proper divisors (85395020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77467540 is a wasteful number, since it uses less digits than its factorization.

77467540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311 (or 4309 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 77467540 is about 8801.5646336319. The cubic root of 77467540 is about 426.2914167580.

The spelling of 77467540 in words is "seventy-seven million, four hundred sixty-seven thousand, five hundred forty".