61864850 has 12 divisors (see below), whose sum is σ = 115068714. Its totient is φ = 24745920.

The previous prime is 61864849. The next prime is 61864861. The reversal of 61864850 is 5846816.

It can be written as a sum of positive squares in 3 ways, for example, as 35414401 + 26450449 = 5951^2 + 5143^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 618599 + ... + 618698.

Almost surely, 2^61864850 is an apocalyptic number.

61864850 is a deficient number, since it is larger than the sum of its proper divisors (53203864).

61864850 is a wasteful number, since it uses less digits than its factorization.

61864850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237309 (or 1237304 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 61864850 is about 7865.4211584632. The cubic root of 61864850 is about 395.5013662400.

The spelling of 61864850 in words is "sixty-one million, eight hundred sixty-four thousand, eight hundred fifty".