61609623 has 8 divisors (see below), whose sum is σ = 82190448. Its totient is φ = 41050944.

The previous prime is 61609619. The next prime is 61609633. The reversal of 61609623 is 32690616.

It is a happy number.

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

It is not a de Polignac number, because 61609623 - 2² = 61609619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61609633) 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, 2715 + ... + 11427.

It is an arithmetic number, because the mean of its divisors is an integer number (10273806).

Almost surely, 2^61609623 is an apocalyptic number.

61609623 is a deficient number, since it is larger than the sum of its proper divisors (20580825).

61609623 is a wasteful number, since it uses less digits than its factorization.

61609623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 61609623 is about 7849.1797660647. The cubic root of 61609623 is about 394.9567286894.

The spelling of 61609623 in words is "sixty-one million, six hundred nine thousand, six hundred twenty-three".