61982490 has 16 divisors (see below), whose sum is σ = 148758048. Its totient is φ = 16528656.

The previous prime is 61982461. The next prime is 61982497. The reversal of 61982490 is 9428916.

It is not an unprimeable number, because it can be changed into a prime (61982497) 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, 1033012 + ... + 1033071.

It is an arithmetic number, because the mean of its divisors is an integer number (9297378).

Almost surely, 2^61982490 is an apocalyptic number.

61982490 is an abundant number, since it is smaller than the sum of its proper divisors (86775558).

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

61982490 is a wasteful number, since it uses less digits than its factorization.

61982490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066093.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 61982490 is about 7872.8959093843. The cubic root of 61982490 is about 395.7518979534.

The spelling of 61982490 in words is "sixty-one million, nine hundred eighty-two thousand, four hundred ninety".