83637642 has 16 divisors (see below), whose sum is σ = 182482272. Its totient is φ = 25344720.

The previous prime is 83637613. The next prime is 83637643. The reversal of 83637642 is 24673638.

It is a self number, because there is not a number n which added to its sum of digits gives 83637642.

It is not an unprimeable number, because it can be changed into a prime (83637643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633553 + ... + 633684.

It is an arithmetic number, because the mean of its divisors is an integer number (11405142).

Almost surely, 2^83637642 is an apocalyptic number.

83637642 is an abundant number, since it is smaller than the sum of its proper divisors (98844630).

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

83637642 is a wasteful number, since it uses less digits than its factorization.

83637642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267253.

The product of its digits is 145152, while the sum is 39.

The square root of 83637642 is about 9145.3617752389. The cubic root of 83637642 is about 437.3212627161.

The spelling of 83637642 in words is "eighty-three million, six hundred thirty-seven thousand, six hundred forty-two".