61616315 has 4 divisors (see below), whose sum is σ = 73939584. Its totient is φ = 49293048.

The previous prime is 61616311. The next prime is 61616327. The reversal of 61616315 is 51361616.

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 61616315 - 2² = 61616311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61616311) 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, 6161627 + ... + 6161636.

It is an arithmetic number, because the mean of its divisors is an integer number (18484896).

Almost surely, 2^61616315 is an apocalyptic number.

61616315 is a deficient number, since it is larger than the sum of its proper divisors (12323269).

61616315 is a wasteful number, since it uses less digits than its factorization.

61616315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12323268.

The product of its digits is 3240, while the sum is 29.

The square root of 61616315 is about 7849.6060410698. The cubic root of 61616315 is about 394.9710281587.

The spelling of 61616315 in words is "sixty-one million, six hundred sixteen thousand, three hundred fifteen".