61427688 has 32 divisors (see below), whose sum is σ = 175508160. Its totient is φ = 17550720.

The previous prime is 61427669. The next prime is 61427699. The reversal of 61427688 is 88672416.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182653 + ... + 182988.

It is an arithmetic number, because the mean of its divisors is an integer number (5484630).

Almost surely, 2^61427688 is an apocalyptic number.

It is an amenable number.

61427688 is an abundant number, since it is smaller than the sum of its proper divisors (114080472).

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

61427688 is a wasteful number, since it uses less digits than its factorization.

61427688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365657 (or 365653 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 61427688 is about 7837.5817699084. The cubic root of 61427688 is about 394.5675724905.

The spelling of 61427688 in words is "sixty-one million, four hundred twenty-seven thousand, six hundred eighty-eight".