61982580 has 48 divisors (see below), whose sum is σ = 189330624. Its totient is φ = 15025920.

The previous prime is 61982521. The next prime is 61982581. The reversal of 61982580 is 8528916.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61982581) 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, 46297 + ... + 47616.

It is an arithmetic number, because the mean of its divisors is an integer number (3944388).

Almost surely, 2^61982580 is an apocalyptic number.

61982580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61982580 is an abundant number, since it is smaller than the sum of its proper divisors (127348044).

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

61982580 is a wasteful number, since it uses less digits than its factorization.

61982580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93936 (or 93934 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 61982580 is about 7872.9016251951. The cubic root of 61982580 is about 395.7520895002.

It can be divided in two parts, 6198 and 2580, that added together give a palindrome (8778).

The spelling of 61982580 in words is "sixty-one million, nine hundred eighty-two thousand, five hundred eighty".