64231960 has 64 divisors (see below), whose sum is σ = 157308480. Its totient is φ = 23462400.

The previous prime is 64231883. The next prime is 64231961. The reversal of 64231960 is 6913246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64231961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51909 + ... + 53131.

It is an arithmetic number, because the mean of its divisors is an integer number (2457945).

Almost surely, 2^64231960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64231960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78654240).

64231960 is an abundant number, since it is smaller than the sum of its proper divisors (93076520).

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

64231960 is a wasteful number, since it uses less digits than its factorization.

64231960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 64231960 is about 8014.4843876571. The cubic root of 64231960 is about 400.4826673463.

The spelling of 64231960 in words is "sixty-four million, two hundred thirty-one thousand, nine hundred sixty".