64662260 has 24 divisors (see below), whose sum is σ = 146236776. Its totient is φ = 23875200.

The previous prime is 64662259. The next prime is 64662319. The reversal of 64662260 is 6226646.

It can be written as a sum of positive squares in 4 ways, for example, as 2630884 + 62031376 = 1622^2 + 7876^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124091 + ... + 124610.

It is an arithmetic number, because the mean of its divisors is an integer number (6093199).

Almost surely, 2^64662260 is an apocalyptic number.

It is an amenable number.

64662260 is an abundant number, since it is smaller than the sum of its proper divisors (81574516).

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

64662260 is a wasteful number, since it uses less digits than its factorization.

64662260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248723 (or 248721 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 64662260 is about 8041.2847232268. The cubic root of 64662260 is about 401.3749765167.

The spelling of 64662260 in words is "sixty-four million, six hundred sixty-two thousand, two hundred sixty".