61662445 has 16 divisors (see below), whose sum is σ = 80881920. Its totient is φ = 44852544.

The previous prime is 61662431. The next prime is 61662481. The reversal of 61662445 is 54426616.

It is a cyclic number.

It is not a de Polignac number, because 61662445 - 2⁵ = 61662413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61662445.

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, 2725 + ... + 11434.

It is an arithmetic number, because the mean of its divisors is an integer number (5055120).

Almost surely, 2^61662445 is an apocalyptic number.

61662445 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61662445 is a deficient number, since it is larger than the sum of its proper divisors (19219475).

61662445 is a wasteful number, since it uses less digits than its factorization.

61662445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14244.

The product of its digits is 34560, while the sum is 34.

The square root of 61662445 is about 7852.5438553376. The cubic root of 61662445 is about 395.0695706119.

The spelling of 61662445 in words is "sixty-one million, six hundred sixty-two thousand, four hundred forty-five".