61798566 has 16 divisors (see below), whose sum is σ = 124488000. Its totient is φ = 20451048.

The previous prime is 61798549. The next prime is 61798571. The reversal of 61798566 is 66589716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36216 + ... + 37883.

It is an arithmetic number, because the mean of its divisors is an integer number (7780500).

Almost surely, 2^61798566 is an apocalyptic number.

61798566 is an abundant number, since it is smaller than the sum of its proper divisors (62689434).

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

61798566 is a wasteful number, since it uses less digits than its factorization.

61798566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74243.

The product of its digits is 544320, while the sum is 48.

The square root of 61798566 is about 7861.2063959675. The cubic root of 61798566 is about 395.3600647803.

The spelling of 61798566 in words is "sixty-one million, seven hundred ninety-eight thousand, five hundred sixty-six".