61612730 has 16 divisors (see below), whose sum is σ = 112423464. Its totient is φ = 24307200.

The previous prime is 61612729. The next prime is 61612753. The reversal of 61612730 is 3721616.

61612730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 34374769 + 27237961 = 5863^2 + 5219^2 .

It is a super-2 number, since 2×61612730² = 7592256996105800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61612730.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41471 + ... + 42930.

Almost surely, 2^61612730 is an apocalyptic number.

61612730 is a deficient number, since it is larger than the sum of its proper divisors (50810734).

61612730 is a wasteful number, since it uses less digits than its factorization.

61612730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84481.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 61612730 is about 7849.3776823389. The cubic root of 61612730 is about 394.9633678575.

The spelling of 61612730 in words is "sixty-one million, six hundred twelve thousand, seven hundred thirty".