77342646 has 16 divisors (see below), whose sum is σ = 158458608. Its totient is φ = 25152000.

The previous prime is 77342641. The next prime is 77342651. The reversal of 77342646 is 64624377.

It is an interprime number because it is at equal distance from previous prime (77342641) and next prime (77342651).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77342641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156955 + ... + 157446.

It is an arithmetic number, because the mean of its divisors is an integer number (9903663).

Almost surely, 2^77342646 is an apocalyptic number.

77342646 is an abundant number, since it is smaller than the sum of its proper divisors (81115962).

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

77342646 is a wasteful number, since it uses less digits than its factorization.

77342646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314447.

The product of its digits is 169344, while the sum is 39.

The square root of 77342646 is about 8794.4667831541. The cubic root of 77342646 is about 426.0622030000.

The spelling of 77342646 in words is "seventy-seven million, three hundred forty-two thousand, six hundred forty-six".