77253966 has 32 divisors (see below), whose sum is σ = 174921120. Its totient is φ = 25264512.

The previous prime is 77253949. The next prime is 77253971. The reversal of 77253966 is 66935277.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10635 + ... + 16358.

It is an arithmetic number, because the mean of its divisors is an integer number (5466285).

Almost surely, 2^77253966 is an apocalyptic number.

77253966 is an abundant number, since it is smaller than the sum of its proper divisors (97667154).

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

77253966 is a wasteful number, since it uses less digits than its factorization.

77253966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27057 (or 27051 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 77253966 is about 8789.4235305849. The cubic root of 77253966 is about 425.8993017294.

The spelling of 77253966 in words is "seventy-seven million, two hundred fifty-three thousand, nine hundred sixty-six".