61315607 has 4 divisors (see below), whose sum is σ = 61419600. Its totient is φ = 61211616.

The previous prime is 61315567. The next prime is 61315621. The reversal of 61315607 is 70651316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61315607 - 2⁸ = 61315351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61315607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61315627) 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, 51107 + ... + 52292.

It is an arithmetic number, because the mean of its divisors is an integer number (15354900).

Almost surely, 2^61315607 is an apocalyptic number.

61315607 is a deficient number, since it is larger than the sum of its proper divisors (103993).

61315607 is a wasteful number, since it uses less digits than its factorization.

61315607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103992.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 61315607 is about 7830.4282769207. The cubic root of 61315607 is about 394.3274503046.

The spelling of 61315607 in words is "sixty-one million, three hundred fifteen thousand, six hundred seven".