61861118 has 32 divisors (see below), whose sum is σ = 106997760. Its totient is φ = 26558560.

The previous prime is 61861103. The next prime is 61861127. The reversal of 61861118 is 81116816.

It is a congruent number.

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, 28955 + ... + 31017.

It is an arithmetic number, because the mean of its divisors is an integer number (3343680).

Almost surely, 2^61861118 is an apocalyptic number.

61861118 is a deficient number, since it is larger than the sum of its proper divisors (45136642).

61861118 is a wasteful number, since it uses less digits than its factorization.

61861118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152.

The product of its digits is 2304, while the sum is 32.

The square root of 61861118 is about 7865.1839139336. The cubic root of 61861118 is about 395.4934132005.

The spelling of 61861118 in words is "sixty-one million, eight hundred sixty-one thousand, one hundred eighteen".