61159623 has 16 divisors (see below), whose sum is σ = 93367296. Its totient is φ = 34884000.

The previous prime is 61159601. The next prime is 61159627. The reversal of 61159623 is 32695116.

It is a happy number.

It is not a de Polignac number, because 61159623 - 2⁸ = 61159367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61159627) 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, 10498 + ... + 15248.

It is an arithmetic number, because the mean of its divisors is an integer number (5835456).

Almost surely, 2^61159623 is an apocalyptic number.

61159623 is a deficient number, since it is larger than the sum of its proper divisors (32207673).

61159623 is a wasteful number, since it uses less digits than its factorization.

61159623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374.

The product of its digits is 9720, while the sum is 33.

The square root of 61159623 is about 7820.4618150081. The cubic root of 61159623 is about 393.9927828992.

The spelling of 61159623 in words is "sixty-one million, one hundred fifty-nine thousand, six hundred twenty-three".