61849864 has 16 divisors (see below), whose sum is σ = 122072400. Its totient is φ = 29297232.

The previous prime is 61849849. The next prime is 61849871. The reversal of 61849864 is 46894816.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203302 + ... + 203605.

It is an arithmetic number, because the mean of its divisors is an integer number (7629525).

Almost surely, 2^61849864 is an apocalyptic number.

It is an amenable number.

61849864 is a deficient number, since it is larger than the sum of its proper divisors (60222536).

61849864 is a wasteful number, since it uses less digits than its factorization.

61849864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406932 (or 406928 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 61849864 is about 7864.4684499335. The cubic root of 61849864 is about 395.4694285450.

The spelling of 61849864 in words is "sixty-one million, eight hundred forty-nine thousand, eight hundred sixty-four".