61900663 has 8 divisors (see below), whose sum is σ = 67631760. Its totient is φ = 56186880.

The previous prime is 61900633. The next prime is 61900753. The reversal of 61900663 is 36600916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61900663 - 2⁹ = 61900151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61900633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3831 + ... + 11767.

It is an arithmetic number, because the mean of its divisors is an integer number (8453970).

Almost surely, 2^61900663 is an apocalyptic number.

61900663 is a deficient number, since it is larger than the sum of its proper divisors (5731097).

61900663 is a wasteful number, since it uses less digits than its factorization.

61900663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8657.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 61900663 is about 7867.6974395308. The cubic root of 61900663 is about 395.5776689016.

The spelling of 61900663 in words is "sixty-one million, nine hundred thousand, six hundred sixty-three".