64090780 has 48 divisors (see below), whose sum is σ = 147710304. Its totient is φ = 23212800.

The previous prime is 64090739. The next prime is 64090843. The reversal of 64090780 is 8709046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11455 + ... + 16105.

It is an arithmetic number, because the mean of its divisors is an integer number (3077298).

Almost surely, 2^64090780 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 64090780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73855152).

64090780 is an abundant number, since it is smaller than the sum of its proper divisors (83619524).

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

64090780 is a wasteful number, since it uses less digits than its factorization.

64090780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4726 (or 4724 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 64090780 is about 8005.6717394607. The cubic root of 64090780 is about 400.1890356497.

The spelling of 64090780 in words is "sixty-four million, ninety thousand, seven hundred eighty".