61882857 has 24 divisors (see below), whose sum is σ = 94348800. Its totient is φ = 39006528.

The previous prime is 61882841. The next prime is 61882861. The reversal of 61882857 is 75828816.

61882857 is a `hidden beast` number, since 618 + 8 + 28 + 5 + 7 = 666.

It is not a de Polignac number, because 61882857 - 2⁴ = 61882841 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (61882157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16744 + ... + 20102.

It is an arithmetic number, because the mean of its divisors is an integer number (3931200).

Almost surely, 2^61882857 is an apocalyptic number.

It is an amenable number.

61882857 is a deficient number, since it is larger than the sum of its proper divisors (32465943).

61882857 is a wasteful number, since it uses less digits than its factorization.

61882857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3477 (or 3474 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 61882857 is about 7866.5657691270. The cubic root of 61882857 is about 395.5397353744.

It can be divided in two parts, 6188 and 2857, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 61882857 in words is "sixty-one million, eight hundred eighty-two thousand, eight hundred fifty-seven".