61939982 has 8 divisors (see below), whose sum is σ = 100056936. Its totient is φ = 28587672.

The previous prime is 61939979. The next prime is 61939991. The reversal of 61939982 is 28993916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×61939982² = 7673122740320648, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1191128 + ... + 1191179.

It is an arithmetic number, because the mean of its divisors is an integer number (12507117).

Almost surely, 2^61939982 is an apocalyptic number.

61939982 is a deficient number, since it is larger than the sum of its proper divisors (38116954).

61939982 is a wasteful number, since it uses less digits than its factorization.

61939982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382322.

The product of its digits is 209952, while the sum is 47.

The square root of 61939982 is about 7870.1958044257. The cubic root of 61939982 is about 395.6614075109.

The spelling of 61939982 in words is "sixty-one million, nine hundred thirty-nine thousand, nine hundred eighty-two".