61481712 has 20 divisors (see below), whose sum is σ = 158827880. Its totient is φ = 20493888.

The previous prime is 61481689. The next prime is 61481723. The reversal of 61481712 is 21718416.

It is a self number, because there is not a number n which added to its sum of digits gives 61481712.

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, 640387 + ... + 640482.

It is an arithmetic number, because the mean of its divisors is an integer number (7941394).

Almost surely, 2^61481712 is an apocalyptic number.

It is an amenable number.

61481712 is an abundant number, since it is smaller than the sum of its proper divisors (97346168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61481712 is a wasteful number, since it uses less digits than its factorization.

61481712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280880 (or 1280874 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

The square root of 61481712 is about 7841.0274836912. The cubic root of 61481712 is about 394.6832091212.

The spelling of 61481712 in words is "sixty-one million, four hundred eighty-one thousand, seven hundred twelve".