61982680 has 32 divisors (see below), whose sum is σ = 147666240. Its totient is φ = 23334400.

The previous prime is 61982653. The next prime is 61982681. The reversal of 61982680 is 8628916.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61982681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44896 + ... + 46255.

It is an arithmetic number, because the mean of its divisors is an integer number (4614570).

Almost surely, 2^61982680 is an apocalyptic number.

It is an amenable number.

61982680 is an abundant number, since it is smaller than the sum of its proper divisors (85683560).

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

61982680 is a wasteful number, since it uses less digits than its factorization.

61982680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91179 (or 91175 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 61982680 is about 7872.9079760912. The cubic root of 61982680 is about 395.7523023299.

The spelling of 61982680 in words is "sixty-one million, nine hundred eighty-two thousand, six hundred eighty".