61900580 has 24 divisors (see below), whose sum is σ = 148561728. Its totient is φ = 21223008.

The previous prime is 61900541. The next prime is 61900633. The reversal of 61900580 is 8500916.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220934 + ... + 221213.

It is an arithmetic number, because the mean of its divisors is an integer number (6190072).

Almost surely, 2^61900580 is an apocalyptic number.

It is an amenable number.

61900580 is an abundant number, since it is smaller than the sum of its proper divisors (86661148).

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

61900580 is a wasteful number, since it uses less digits than its factorization.

61900580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442163 (or 442161 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 61900580 is about 7867.6921647965. The cubic root of 61900580 is about 395.5774920970.

The spelling of 61900580 in words is "sixty-one million, nine hundred thousand, five hundred eighty".