61990912 has 24 divisors (see below), whose sum is σ = 123955650. Its totient is φ = 30994432.

The previous prime is 61990897. The next prime is 61990913. The reversal of 61990912 is 21909916.

It can be written as a sum of positive squares in only one way, i.e., 43877376 + 18113536 = 6624^2 + 4256^2 .

It is not an unprimeable number, because it can be changed into a prime (61990913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13087 + ... + 17182.

Almost surely, 2^61990912 is an apocalyptic number.

It is an amenable number.

61990912 is a deficient number, since it is larger than the sum of its proper divisors (61964738).

61990912 is an equidigital number, since it uses as much as digits as its factorization.

61990912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30291 (or 30271 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 61990912 is about 7873.4307642857. The cubic root of 61990912 is about 395.7698216796.

The spelling of 61990912 in words is "sixty-one million, nine hundred ninety thousand, nine hundred twelve".