61907623 has 4 divisors (see below), whose sum is σ = 63580840. Its totient is φ = 60234408.

The previous prime is 61907617. The next prime is 61907627. The reversal of 61907623 is 32670916.

61907623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61907623 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 (61907627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836553 + ... + 836626.

It is an arithmetic number, because the mean of its divisors is an integer number (15895210).

Almost surely, 2^61907623 is an apocalyptic number.

61907623 is a deficient number, since it is larger than the sum of its proper divisors (1673217).

61907623 is a wasteful number, since it uses less digits than its factorization.

61907623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673216.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 61907623 is about 7868.1397420229. The cubic root of 61907623 is about 395.5924943615.

The spelling of 61907623 in words is "sixty-one million, nine hundred seven thousand, six hundred twenty-three".