61317697 has 8 divisors (see below), whose sum is σ = 71265600. Its totient is φ = 51666864.

The previous prime is 61317653. The next prime is 61317733. The reversal of 61317697 is 79671316.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61317697 - 2¹⁵ = 61284929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61317637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73822 + ... + 74647.

It is an arithmetic number, because the mean of its divisors is an integer number (8908200).

Almost surely, 2^61317697 is an apocalyptic number.

It is an amenable number.

61317697 is a deficient number, since it is larger than the sum of its proper divisors (9947903).

61317697 is a wasteful number, since it uses less digits than its factorization.

61317697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148535.

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

The square root of 61317697 is about 7830.5617295313. The cubic root of 61317697 is about 394.3319305941.

The spelling of 61317697 in words is "sixty-one million, three hundred seventeen thousand, six hundred ninety-seven".