64687260 has 48 divisors (see below), whose sum is σ = 197592192. Its totient is φ = 15681600.

The previous prime is 64687253. The next prime is 64687289. The reversal of 64687260 is 6278646.

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, 48346 + ... + 49665.

It is an arithmetic number, because the mean of its divisors is an integer number (4116504).

Almost surely, 2^64687260 is an apocalyptic number.

64687260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64687260 is an abundant number, since it is smaller than the sum of its proper divisors (132904932).

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

64687260 is a wasteful number, since it uses less digits than its factorization.

64687260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98034 (or 98032 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 64687260 is about 8042.8390509819. The cubic root of 64687260 is about 401.4266969562.

The spelling of 64687260 in words is "sixty-four million, six hundred eighty-seven thousand, two hundred sixty".