61396818 has 32 divisors (see below), whose sum is σ = 141419520. Its totient is φ = 17406480.

The previous prime is 61396793. The next prime is 61396831. The reversal of 61396818 is 81869316.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 61396818.

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, 78 + ... + 11081.

It is an arithmetic number, because the mean of its divisors is an integer number (4419360).

Almost surely, 2^61396818 is an apocalyptic number.

61396818 is an abundant number, since it is smaller than the sum of its proper divisors (80022702).

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

61396818 is a wasteful number, since it uses less digits than its factorization.

61396818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11302.

The product of its digits is 62208, while the sum is 42.

The square root of 61396818 is about 7835.6121649811. The cubic root of 61396818 is about 394.5014658086.

The spelling of 61396818 in words is "sixty-one million, three hundred ninety-six thousand, eight hundred eighteen".