77750064 has 120 divisors (see below), whose sum is σ = 259678320. Its totient is φ = 22208256.

The previous prime is 77750053. The next prime is 77750081. The reversal of 77750064 is 46005777.

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 23 ways as a sum of consecutive naturals, for example, 19332 + ... + 23004.

It is an arithmetic number, because the mean of its divisors is an integer number (2163986).

Almost surely, 2^77750064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77750064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129839160).

77750064 is an abundant number, since it is smaller than the sum of its proper divisors (181928256).

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

77750064 is a wasteful number, since it uses less digits than its factorization.

77750064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3704 (or 3685 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 77750064 is about 8817.5996733805. The cubic root of 77750064 is about 426.8090160875.

The spelling of 77750064 in words is "seventy-seven million, seven hundred fifty thousand, sixty-four".