61613797 has 16 divisors (see below), whose sum is σ = 76298112. Its totient is φ = 48545280.

The previous prime is 61613753. The next prime is 61613801. The reversal of 61613797 is 79731616.

It is a happy number.

It is not a de Polignac number, because 61613797 - 2¹¹ = 61611749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61613707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904 + ... + 11137.

It is an arithmetic number, because the mean of its divisors is an integer number (4768632).

Almost surely, 2^61613797 is an apocalyptic number.

It is an amenable number.

61613797 is a deficient number, since it is larger than the sum of its proper divisors (14684315).

61613797 is a wasteful number, since it uses less digits than its factorization.

61613797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12108.

The product of its digits is 47628, while the sum is 40.

The square root of 61613797 is about 7849.4456492163. The cubic root of 61613797 is about 394.9656478164.

The spelling of 61613797 in words is "sixty-one million, six hundred thirteen thousand, seven hundred ninety-seven".