61349638 has 16 divisors (see below), whose sum is σ = 106613280. Its totient is φ = 25932096.

The previous prime is 61349623. The next prime is 61349641. The reversal of 61349638 is 83694316.

It is a self number, because there is not a number n which added to its sum of digits gives 61349638.

It is a congruent number.

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, 28993 + ... + 31036.

It is an arithmetic number, because the mean of its divisors is an integer number (6663330).

Almost surely, 2^61349638 is an apocalyptic number.

61349638 is a deficient number, since it is larger than the sum of its proper divisors (45263642).

61349638 is a wasteful number, since it uses less digits than its factorization.

61349638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60111.

The product of its digits is 93312, while the sum is 40.

The square root of 61349638 is about 7832.6009728570. The cubic root of 61349638 is about 394.4003891873.

The spelling of 61349638 in words is "sixty-one million, three hundred forty-nine thousand, six hundred thirty-eight".