61894866 has 16 divisors (see below), whose sum is σ = 135043488. Its totient is φ = 18756000.

The previous prime is 61894823. The next prime is 61894873. The reversal of 61894866 is 66849816.

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, 468835 + ... + 468966.

It is an arithmetic number, because the mean of its divisors is an integer number (8440218).

Almost surely, 2^61894866 is an apocalyptic number.

61894866 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61894866 is an abundant number, since it is smaller than the sum of its proper divisors (73148622).

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

61894866 is a wasteful number, since it uses less digits than its factorization.

61894866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937817.

The product of its digits is 497664, while the sum is 48.

The square root of 61894866 is about 7867.3290257876. The cubic root of 61894866 is about 395.5653198937.

The spelling of 61894866 in words is "sixty-one million, eight hundred ninety-four thousand, eight hundred sixty-six".