61814988 has 30 divisors (see below), whose sum is σ = 161597436. Its totient is φ = 20604888.

The previous prime is 61814983. The next prime is 61814989. The reversal of 61814988 is 88941816.

It is not an unprimeable number, because it can be changed into a prime (61814981) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 95070 + ... + 95717.

Almost surely, 2^61814988 is an apocalyptic number.

It is an amenable number.

61814988 is an abundant number, since it is smaller than the sum of its proper divisors (99782448).

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

61814988 is a wasteful number, since it uses less digits than its factorization.

61814988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190803 (or 190792 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 61814988 is about 7862.2508227606. The cubic root of 61814988 is about 395.3950819249.

The spelling of 61814988 in words is "sixty-one million, eight hundred fourteen thousand, nine hundred eighty-eight".