64090700 has 18 divisors (see below), whose sum is σ = 139077036. Its totient is φ = 25636240.

The previous prime is 64090699. The next prime is 64090703. The reversal of 64090700 is 709046.

It is a self number, because there is not a number n which added to its sum of digits gives 64090700.

It is not an unprimeable number, because it can be changed into a prime (64090703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320354 + ... + 320553.

It is an arithmetic number, because the mean of its divisors is an integer number (7726502).

Almost surely, 2^64090700 is an apocalyptic number.

It is an amenable number.

64090700 is an abundant number, since it is smaller than the sum of its proper divisors (74986336).

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

64090700 is a wasteful number, since it uses less digits than its factorization.

64090700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640921 (or 640914 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 64090700 is about 8005.6667430015. Note that the first 3 decimals coincide. The cubic root of 64090700 is about 400.1888691404.

Adding to 64090700 its reverse (709046), we get a palindrome (64799746).

The spelling of 64090700 in words is "sixty-four million, ninety thousand, seven hundred".