64971480 has 64 divisors (see below), whose sum is σ = 222762240. Its totient is φ = 14850432.

The previous prime is 64971479. The next prime is 64971493. The reversal of 64971480 is 8417946.

It is a happy number.

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, 37834 + ... + 39513.

It is an arithmetic number, because the mean of its divisors is an integer number (3480660).

Almost surely, 2^64971480 is an apocalyptic number.

64971480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64971480 is an abundant number, since it is smaller than the sum of its proper divisors (157790760).

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

64971480 is a wasteful number, since it uses less digits than its factorization.

64971480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77368 (or 77364 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 64971480 is about 8060.4888189241. The cubic root of 64971480 is about 402.0137615645.

The spelling of 64971480 in words is "sixty-four million, nine hundred seventy-one thousand, four hundred eighty".