61859912 has 8 divisors (see below), whose sum is σ = 115987350. Its totient is φ = 30929952.

The previous prime is 61859909. The next prime is 61859921. The reversal of 61859912 is 21995816.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59382436 + 2477476 = 7706^2 + 1574^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 61859912.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3866237 + ... + 3866252.

Almost surely, 2^61859912 is an apocalyptic number.

It is an amenable number.

61859912 is a deficient number, since it is larger than the sum of its proper divisors (54127438).

61859912 is a wasteful number, since it uses less digits than its factorization.

61859912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7732495 (or 7732491 counting only the distinct ones).

The product of its digits is 38880, while the sum is 41.

The square root of 61859912 is about 7865.1072465670. The cubic root of 61859912 is about 395.4908430985.

The spelling of 61859912 in words is "sixty-one million, eight hundred fifty-nine thousand, nine hundred twelve".