61958690 has 32 divisors (see below), whose sum is σ = 114580224. Its totient is φ = 24111360.

The previous prime is 61958641. The next prime is 61958707. The reversal of 61958690 is 9685916.

It is a super-2 number, since 2×61958690² = 7677758533032200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112997 + ... + 113543.

It is an arithmetic number, because the mean of its divisors is an integer number (3580632).

Almost surely, 2^61958690 is an apocalyptic number.

61958690 is a deficient number, since it is larger than the sum of its proper divisors (52621534).

61958690 is a wasteful number, since it uses less digits than its factorization.

61958690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 61958690 is about 7871.3842492919. The cubic root of 61958690 is about 395.7012379418.

The spelling of 61958690 in words is "sixty-one million, nine hundred fifty-eight thousand, six hundred ninety".