61606615 has 16 divisors (see below), whose sum is σ = 84648960. Its totient is φ = 42164640.

The previous prime is 61606547. The next prime is 61606631. The reversal of 61606615 is 51660616.

It is not a de Polignac number, because 61606615 - 2¹³ = 61598423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21730 + ... + 24400.

It is an arithmetic number, because the mean of its divisors is an integer number (5290560).

Almost surely, 2^61606615 is an apocalyptic number.

61606615 is a deficient number, since it is larger than the sum of its proper divisors (23042345).

61606615 is a wasteful number, since it uses less digits than its factorization.

61606615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 61606615 is about 7848.9881513479. The cubic root of 61606615 is about 394.9503008560.

The spelling of 61606615 in words is "sixty-one million, six hundred six thousand, six hundred fifteen".