61966338 has 32 divisors (see below), whose sum is σ = 141938304. Its totient is φ = 17667072.

The previous prime is 61966337. The next prime is 61966349. The reversal of 61966338 is 83366916.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 61966338.

It is not an unprimeable number, because it can be changed into a prime (61966337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22956 + ... + 25512.

It is an arithmetic number, because the mean of its divisors is an integer number (4435572).

Almost surely, 2^61966338 is an apocalyptic number.

61966338 is an abundant number, since it is smaller than the sum of its proper divisors (79971966).

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

61966338 is a wasteful number, since it uses less digits than its factorization.

61966338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3146.

The product of its digits is 139968, while the sum is 42.

The square root of 61966338 is about 7871.8700446590. The cubic root of 61966338 is about 395.7175186742.

The spelling of 61966338 in words is "sixty-one million, nine hundred sixty-six thousand, three hundred thirty-eight".