64007790 has 128 divisors (see below), whose sum is σ = 193950720. Its totient is φ = 13242240.

The previous prime is 64007773. The next prime is 64007791. The reversal of 64007790 is 9770046.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64007791) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 279396 + ... + 279624.

It is an arithmetic number, because the mean of its divisors is an integer number (1515240).

Almost surely, 2^64007790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64007790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96975360).

64007790 is an abundant number, since it is smaller than the sum of its proper divisors (129942930).

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

64007790 is a wasteful number, since it uses less digits than its factorization.

64007790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 64007790 is about 8000.4868601854. The cubic root of 64007790 is about 400.0162285082.

The spelling of 64007790 in words is "sixty-four million, seven thousand, seven hundred ninety".