61426668 has 12 divisors (see below), whose sum is σ = 143328920. Its totient is φ = 20475552.

The previous prime is 61426637. The next prime is 61426681. The reversal of 61426668 is 86662416.

It is a tau number, because it is divible by the number of its divisors (12).

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, 2559433 + ... + 2559456.

Almost surely, 2^61426668 is an apocalyptic number.

It is an amenable number.

61426668 is an abundant number, since it is smaller than the sum of its proper divisors (81902252).

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

61426668 is a wasteful number, since it uses less digits than its factorization.

61426668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118896 (or 5118894 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 61426668 is about 7837.5166985468. The cubic root of 61426668 is about 394.5653885614.

The spelling of 61426668 in words is "sixty-one million, four hundred twenty-six thousand, six hundred sixty-eight".