61631117 has 8 divisors (see below), whose sum is σ = 64947360. Its totient is φ = 58322160.

The previous prime is 61631113. The next prime is 61631123. The reversal of 61631117 is 71113616.

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 61631117 - 2² = 61631113 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 (61631111) 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, 29642 + ... + 31652.

It is an arithmetic number, because the mean of its divisors is an integer number (8118420).

Almost surely, 2^61631117 is an apocalyptic number.

It is an amenable number.

61631117 is a deficient number, since it is larger than the sum of its proper divisors (3316243).

61631117 is a wasteful number, since it uses less digits than its factorization.

61631117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643.

The product of its digits is 756, while the sum is 26.

The square root of 61631117 is about 7850.5488343173. The cubic root of 61631117 is about 395.0026534031.

The spelling of 61631117 in words is "sixty-one million, six hundred thirty-one thousand, one hundred seventeen".