61697959 has 8 divisors (see below), whose sum is σ = 65197440. Its totient is φ = 58223736.

The previous prime is 61697957. The next prime is 61697963. The reversal of 61697959 is 95979616.

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 61697959 - 2¹ = 61697957 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 (61697953) 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, 1177 + ... + 11170.

It is an arithmetic number, because the mean of its divisors is an integer number (8149680).

Almost surely, 2^61697959 is an apocalyptic number.

61697959 is a deficient number, since it is larger than the sum of its proper divisors (3499481).

61697959 is a wasteful number, since it uses less digits than its factorization.

61697959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12629.

The product of its digits is 918540, while the sum is 52.

The square root of 61697959 is about 7854.8048352585. The cubic root of 61697959 is about 395.1454017925.

The spelling of 61697959 in words is "sixty-one million, six hundred ninety-seven thousand, nine hundred fifty-nine".