61461618 has 32 divisors (see below), whose sum is σ = 132157440. Its totient is φ = 18994320.

The previous prime is 61461607. The next prime is 61461661. The reversal of 61461618 is 81616416.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378 + ... + 11093.

It is an arithmetic number, because the mean of its divisors is an integer number (4129920).

Almost surely, 2^61461618 is an apocalyptic number.

61461618 is an abundant number, since it is smaller than the sum of its proper divisors (70695822).

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

61461618 is a wasteful number, since it uses less digits than its factorization.

61461618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11542.

The product of its digits is 6912, while the sum is 33.

The square root of 61461618 is about 7839.7460418052. The cubic root of 61461618 is about 394.6402064769.

The spelling of 61461618 in words is "sixty-one million, four hundred sixty-one thousand, six hundred eighteen".