61490902 has 16 divisors (see below), whose sum is σ = 100756224. Its totient is φ = 27913000.

The previous prime is 61490879. The next prime is 61490911. The reversal of 61490902 is 20909416.

It is a happy number.

It is a super-2 number, since 2×61490902² = 7562262057547208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21327 + ... + 24037.

It is an arithmetic number, because the mean of its divisors is an integer number (6297264).

Almost surely, 2^61490902 is an apocalyptic number.

61490902 is a deficient number, since it is larger than the sum of its proper divisors (39265322).

61490902 is a wasteful number, since it uses less digits than its factorization.

61490902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 61490902 is about 7841.6134819309. The cubic root of 61490902 is about 394.7028732775.

The spelling of 61490902 in words is "sixty-one million, four hundred ninety thousand, nine hundred two".