61954618 has 16 divisors (see below), whose sum is σ = 101517120. Its totient is φ = 28123200.

The previous prime is 61954609. The next prime is 61954637. The reversal of 61954618 is 81645916.

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, 20803 + ... + 23593.

It is an arithmetic number, because the mean of its divisors is an integer number (6344820).

Almost surely, 2^61954618 is an apocalyptic number.

61954618 is a deficient number, since it is larger than the sum of its proper divisors (39562502).

61954618 is a wasteful number, since it uses less digits than its factorization.

61954618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813.

The product of its digits is 51840, while the sum is 40.

The square root of 61954618 is about 7871.1255865981. The cubic root of 61954618 is about 395.6925690973.

The spelling of 61954618 in words is "sixty-one million, nine hundred fifty-four thousand, six hundred eighteen".