77425164 has 54 divisors (see below), whose sum is σ = 201274164. Its totient is φ = 25094880.

The previous prime is 77425141. The next prime is 77425177. The reversal of 77425164 is 46152477.

77425164 is a `hidden beast` number, since 77 + 425 + 164 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 48499 + ... + 50069.

Almost surely, 2^77425164 is an apocalyptic number.

77425164 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77425164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100637082).

77425164 is an abundant number, since it is smaller than the sum of its proper divisors (123849000).

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

77425164 is a wasteful number, since it uses less digits than its factorization.

77425164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655 (or 1613 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 77425164 is about 8799.1570050772. The cubic root of 77425164 is about 426.2136731425.

The spelling of 77425164 in words is "seventy-seven million, four hundred twenty-five thousand, one hundred sixty-four".