61858012 has 12 divisors (see below), whose sum is σ = 110892096. Its totient is φ = 30174560.

The previous prime is 61858007. The next prime is 61858021. The reversal of 61858012 is 21085816.

It is a congruent number.

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, 188428 + ... + 188755.

It is an arithmetic number, because the mean of its divisors is an integer number (9241008).

Almost surely, 2^61858012 is an apocalyptic number.

It is an amenable number.

61858012 is a deficient number, since it is larger than the sum of its proper divisors (49034084).

61858012 is a wasteful number, since it uses less digits than its factorization.

61858012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377228 (or 377226 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 61858012 is about 7864.9864589839. The cubic root of 61858012 is about 395.4867939479.

The spelling of 61858012 in words is "sixty-one million, eight hundred fifty-eight thousand, twelve".