61618460 has 24 divisors (see below), whose sum is σ = 129820320. Its totient is φ = 24567104.

The previous prime is 61618451. The next prime is 61618471. The reversal of 61618460 is 6481616.

It is a happy number.

61618460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61618460² = 7593669225543200, which contains 22 as substring.

It is a congruent number.

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, 1481 + ... + 11199.

It is an arithmetic number, because the mean of its divisors is an integer number (5409180).

Almost surely, 2^61618460 is an apocalyptic number.

It is an amenable number.

61618460 is an abundant number, since it is smaller than the sum of its proper divisors (68201860).

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

61618460 is a wasteful number, since it uses less digits than its factorization.

61618460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10045 (or 10043 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 61618460 is about 7849.7426709415. The cubic root of 61618460 is about 394.9756113767.

The spelling of 61618460 in words is "sixty-one million, six hundred eighteen thousand, four hundred sixty".