36561996 has 96 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 11341440.

The previous prime is 36561983. The next prime is 36562021. The reversal of 36561996 is 69916563.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101665 + ... + 102023.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^36561996 is an apocalyptic number.

36561996 is a gapful number since it is divisible by the number (36) 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 36561996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50803200).

36561996 is an abundant number, since it is smaller than the sum of its proper divisors (65044404).

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

36561996 is a wasteful number, since it uses less digits than its factorization.

36561996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 428 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 36561996 is about 6046.6516354095. The cubic root of 36561996 is about 331.9020735040.

The spelling of 36561996 in words is "thirty-six million, five hundred sixty-one thousand, nine hundred ninety-six".