61798164 has 12 divisors (see below), whose sum is σ = 144195744. Its totient is φ = 20599384.

The previous prime is 61798153. The next prime is 61798189. The reversal of 61798164 is 46189716.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574912 + ... + 2574935.

It is an arithmetic number, because the mean of its divisors is an integer number (12016312).

Almost surely, 2^61798164 is an apocalyptic number.

It is an amenable number.

61798164 is an abundant number, since it is smaller than the sum of its proper divisors (82397580).

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

61798164 is a wasteful number, since it uses less digits than its factorization.

61798164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149854 (or 5149852 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 61798164 is about 7861.1808273312. The cubic root of 61798164 is about 395.3592075053.

The spelling of 61798164 in words is "sixty-one million, seven hundred ninety-eight thousand, one hundred sixty-four".