61890927 has 16 divisors (see below), whose sum is σ = 94452480. Its totient is φ = 35312832.

The previous prime is 61890887. The next prime is 61890943. The reversal of 61890927 is 72909816.

It is not a de Polignac number, because 61890927 - 2⁷ = 61890799 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61890967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15168 + ... + 18810.

It is an arithmetic number, because the mean of its divisors is an integer number (5903280).

Almost surely, 2^61890927 is an apocalyptic number.

61890927 is a deficient number, since it is larger than the sum of its proper divisors (32561553).

61890927 is a wasteful number, since it uses less digits than its factorization.

61890927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4462.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 61890927 is about 7867.0786827132. The cubic root of 61890927 is about 395.5569284338.

The spelling of 61890927 in words is "sixty-one million, eight hundred ninety thousand, nine hundred twenty-seven".