61889386 has 16 divisors (see below), whose sum is σ = 100767744. Its totient is φ = 28337904.

The previous prime is 61889357. The next prime is 61889447. The reversal of 61889386 is 68398816.

It is a super-3 number, since 3×61889386³ (a number of 24 digits) contains 333 as substring.

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, 6070 + ... + 12673.

It is an arithmetic number, because the mean of its divisors is an integer number (6297984).

Almost surely, 2^61889386 is an apocalyptic number.

61889386 is a deficient number, since it is larger than the sum of its proper divisors (38878358).

61889386 is a wasteful number, since it uses less digits than its factorization.

61889386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18885.

The product of its digits is 497664, while the sum is 49.

The square root of 61889386 is about 7866.9807423179. The cubic root of 61889386 is about 395.5536454632.

The spelling of 61889386 in words is "sixty-one million, eight hundred eighty-nine thousand, three hundred eighty-six".