64450972 has 12 divisors (see below), whose sum is σ = 112915656. Its totient is φ = 32189360.

The previous prime is 64450949. The next prime is 64450973. The reversal of 64450972 is 27905446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64450973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4798 + ... + 12325.

It is an arithmetic number, because the mean of its divisors is an integer number (9409638).

Almost surely, 2^64450972 is an apocalyptic number.

It is an amenable number.

64450972 is a deficient number, since it is larger than the sum of its proper divisors (48464684).

64450972 is a wasteful number, since it uses less digits than its factorization.

64450972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18068 (or 18066 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 64450972 is about 8028.1362718878. The cubic root of 64450972 is about 400.9373268304.

The spelling of 64450972 in words is "sixty-four million, four hundred fifty thousand, nine hundred seventy-two".