61099968 has 28 divisors (see below), whose sum is σ = 161660840. Its totient is φ = 20366592.

The previous prime is 61099949. The next prime is 61099981. The reversal of 61099968 is 86999016.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 158923 + ... + 159306.

Almost surely, 2^61099968 is an apocalyptic number.

It is an amenable number.

61099968 is an abundant number, since it is smaller than the sum of its proper divisors (100560872).

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

61099968 is a wasteful number, since it uses less digits than its factorization.

61099968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318244 (or 318234 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 61099968 is about 7816.6468514319. The cubic root of 61099968 is about 393.8646412471.

The spelling of 61099968 in words is "sixty-one million, ninety-nine thousand, nine hundred sixty-eight".