61176990 has 48 divisors (see below), whose sum is σ = 170800272. Its totient is φ = 13982976.

The previous prime is 61176989. The next prime is 61176991. The reversal of 61176990 is 9967116.

It is an interprime number because it is at equal distance from previous prime (61176989) and next prime (61176991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61176991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19339 + ... + 22278.

It is an arithmetic number, because the mean of its divisors is an integer number (3558339).

Almost surely, 2^61176990 is an apocalyptic number.

61176990 is an abundant number, since it is smaller than the sum of its proper divisors (109623282).

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

61176990 is a wasteful number, since it uses less digits than its factorization.

61176990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41641 (or 41634 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 61176990 is about 7821.5720926167. The cubic root of 61176990 is about 394.0300723437.

The spelling of 61176990 in words is "sixty-one million, one hundred seventy-six thousand, nine hundred ninety".