77275406 has 32 divisors (see below), whose sum is σ = 129802176. Its totient is φ = 34272000.

The previous prime is 77275399. The next prime is 77275411. The reversal of 77275406 is 60457277.

It is a self number, because there is not a number n which added to its sum of digits gives 77275406.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 75176 + ... + 76196.

It is an arithmetic number, because the mean of its divisors is an integer number (4056318).

Almost surely, 2^77275406 is an apocalyptic number.

77275406 is a deficient number, since it is larger than the sum of its proper divisors (52526770).

77275406 is a wasteful number, since it uses less digits than its factorization.

77275406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 77275406 is about 8790.6430936536. The cubic root of 77275406 is about 425.9386974908.

The spelling of 77275406 in words is "seventy-seven million, two hundred seventy-five thousand, four hundred six".