61423615 has 16 divisors (see below), whose sum is σ = 80831520. Its totient is φ = 44437120.

The previous prime is 61423613. The next prime is 61423619. The reversal of 61423615 is 51632416.

It is not a de Polignac number, because 61423615 - 2¹ = 61423613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61423613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8001 + ... + 13669.

It is an arithmetic number, because the mean of its divisors is an integer number (5051970).

Almost surely, 2^61423615 is an apocalyptic number.

61423615 is a deficient number, since it is larger than the sum of its proper divisors (19407905).

61423615 is a wasteful number, since it uses less digits than its factorization.

61423615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882.

The product of its digits is 4320, while the sum is 28.

The square root of 61423615 is about 7837.3219278016. The cubic root of 61423615 is about 394.5588516173.

The spelling of 61423615 in words is "sixty-one million, four hundred twenty-three thousand, six hundred fifteen".