61099712 has 28 divisors (see below), whose sum is σ = 123063000. Its totient is φ = 30091776.

The previous prime is 61099699. The next prime is 61099721. The reversal of 61099712 is 21799016.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2837 + ... + 11412.

Almost surely, 2^61099712 is an apocalyptic number.

It is an amenable number.

61099712 is an abundant number, since it is smaller than the sum of its proper divisors (61963288).

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

61099712 is a wasteful number, since it uses less digits than its factorization.

61099712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14328 (or 14318 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 61099712 is about 7816.6304761067. The cubic root of 61099712 is about 393.8640911677.

The spelling of 61099712 in words is "sixty-one million, ninety-nine thousand, seven hundred twelve".