77651064 has 48 divisors (see below), whose sum is σ = 210712320. Its totient is φ = 25833600.

The previous prime is 77651047. The next prime is 77651069. The reversal of 77651064 is 46015677.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77651069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66889 + ... + 68039.

It is an arithmetic number, because the mean of its divisors is an integer number (4389840).

Almost surely, 2^77651064 is an apocalyptic number.

It is an amenable number.

77651064 is an abundant number, since it is smaller than the sum of its proper divisors (133061256).

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

77651064 is a wasteful number, since it uses less digits than its factorization.

77651064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 2093 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 77651064 is about 8811.9841125594. The cubic root of 77651064 is about 426.6277856280.

The spelling of 77651064 in words is "seventy-seven million, six hundred fifty-one thousand, sixty-four".