61662417 has 16 divisors (see below), whose sum is σ = 87417792. Its totient is φ = 38528000.

The previous prime is 61662413. The next prime is 61662421. The reversal of 61662417 is 71426616.

It is an interprime number because it is at equal distance from previous prime (61662413) and next prime (61662421).

It is a cyclic number.

It is not a de Polignac number, because 61662417 - 2² = 61662413 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61662413) 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, 10393 + ... + 15209.

It is an arithmetic number, because the mean of its divisors is an integer number (5463612).

Almost surely, 2^61662417 is an apocalyptic number.

It is an amenable number.

61662417 is a deficient number, since it is larger than the sum of its proper divisors (25755375).

61662417 is a wasteful number, since it uses less digits than its factorization.

61662417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088.

The product of its digits is 12096, while the sum is 33.

The square root of 61662417 is about 7852.5420724756. The cubic root of 61662417 is about 395.0695108135.

The spelling of 61662417 in words is "sixty-one million, six hundred sixty-two thousand, four hundred seventeen".