61318359 has 18 divisors (see below), whose sum is σ = 90095928. Its totient is φ = 40186800.

The previous prime is 61318351. The next prime is 61318379. The reversal of 61318359 is 95381316.

It is a happy number.

61318359 is a `hidden beast` number, since 613 + 1 + 8 + 35 + 9 = 666.

It is not a de Polignac number, because 61318359 - 2³ = 61318351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61318351) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 32574 + ... + 34404.

Almost surely, 2^61318359 is an apocalyptic number.

61318359 is a deficient number, since it is larger than the sum of its proper divisors (28777569).

61318359 is a wasteful number, since it uses less digits than its factorization.

61318359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959 (or 1895 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 61318359 is about 7830.6039996925. The cubic root of 61318359 is about 394.3333496885. Note that the first 4 decimals are identical.

The spelling of 61318359 in words is "sixty-one million, three hundred eighteen thousand, three hundred fifty-nine".