83957664 has 96 divisors (see below), whose sum is σ = 254572416. Its totient is φ = 23731200.

The previous prime is 83957617. The next prime is 83957677. The reversal of 83957664 is 46675938.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 67254 + ... + 68490.

It is an arithmetic number, because the mean of its divisors is an integer number (2651796).

Almost surely, 2^83957664 is an apocalyptic number.

83957664 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83957664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127286208).

83957664 is an abundant number, since it is smaller than the sum of its proper divisors (170614752).

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

83957664 is a wasteful number, since it uses less digits than its factorization.

83957664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1350 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 83957664 is about 9162.8414806762. The cubic root of 83957664 is about 437.8783257030.

The spelling of 83957664 in words is "eighty-three million, nine hundred fifty-seven thousand, six hundred sixty-four".