61012776 has 32 divisors (see below), whose sum is σ = 166399200. Its totient is φ = 18488640.

The previous prime is 61012769. The next prime is 61012801. The reversal of 61012776 is 67721016.

It is a happy number.

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, 115291 + ... + 115818.

It is an arithmetic number, because the mean of its divisors is an integer number (5199975).

Almost surely, 2^61012776 is an apocalyptic number.

61012776 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61012776 is an abundant number, since it is smaller than the sum of its proper divisors (105386424).

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

61012776 is a wasteful number, since it uses less digits than its factorization.

61012776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231129 (or 231125 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 61012776 is about 7811.0675326744. The cubic root of 61012776 is about 393.6771987350.

The spelling of 61012776 in words is "sixty-one million, twelve thousand, seven hundred seventy-six".