61635313 has 4 divisors (see below), whose sum is σ = 62503488. Its totient is φ = 60767140.

The previous prime is 61635307. The next prime is 61635323. The reversal of 61635313 is 31353616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61635313 - 2⁵ = 61635281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61635323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433981 + ... + 434122.

It is an arithmetic number, because the mean of its divisors is an integer number (15625872).

Almost surely, 2^61635313 is an apocalyptic number.

It is an amenable number.

61635313 is a deficient number, since it is larger than the sum of its proper divisors (868175).

61635313 is an equidigital number, since it uses as much as digits as its factorization.

61635313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868174.

The product of its digits is 4860, while the sum is 28.

The square root of 61635313 is about 7850.8160722310. The cubic root of 61635313 is about 395.0116174546.

Adding to 61635313 its reverse (31353616), we get a palindrome (92988929).

It can be divided in two parts, 6163 and 5313, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 61635313 in words is "sixty-one million, six hundred thirty-five thousand, three hundred thirteen".