61990174 has 4 divisors (see below), whose sum is σ = 92985264. Its totient is φ = 30995086.

The previous prime is 61990169. The next prime is 61990183. The reversal of 61990174 is 47109916.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15497542 + ... + 15497545.

It is an arithmetic number, because the mean of its divisors is an integer number (23246316).

Almost surely, 2^61990174 is an apocalyptic number.

61990174 is a deficient number, since it is larger than the sum of its proper divisors (30995090).

61990174 is a wasteful number, since it uses less digits than its factorization.

61990174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30995089.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 61990174 is about 7873.3838976643. The cubic root of 61990174 is about 395.7682511306.

The spelling of 61990174 in words is "sixty-one million, nine hundred ninety thousand, one hundred seventy-four".