61757313 has 4 divisors (see below), whose sum is σ = 82343088. Its totient is φ = 41171540.

The previous prime is 61757309. The next prime is 61757321. The reversal of 61757313 is 31375716.

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 61757313 - 2² = 61757309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61757303) 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, 10292883 + ... + 10292888.

It is an arithmetic number, because the mean of its divisors is an integer number (20585772).

Almost surely, 2^61757313 is an apocalyptic number.

It is an amenable number.

61757313 is a deficient number, since it is larger than the sum of its proper divisors (20585775).

61757313 is a wasteful number, since it uses less digits than its factorization.

61757313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20585774.

The product of its digits is 13230, while the sum is 33.

The square root of 61757313 is about 7858.5821240221. The cubic root of 61757313 is about 395.2720723435.

The spelling of 61757313 in words is "sixty-one million, seven hundred fifty-seven thousand, three hundred thirteen".