61642323 has 32 divisors (see below), whose sum is σ = 100915200. Its totient is φ = 36989568.

The previous prime is 61642319. The next prime is 61642331. The reversal of 61642323 is 32324616.

61642323 is a `hidden beast` number, since 616 + 4 + 23 + 23 = 666.

It is not a de Polignac number, because 61642323 - 2² = 61642319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (61642723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7638 + ... + 13476.

It is an arithmetic number, because the mean of its divisors is an integer number (3153600).

Almost surely, 2^61642323 is an apocalyptic number.

61642323 is a deficient number, since it is larger than the sum of its proper divisors (39272877).

61642323 is a wasteful number, since it uses less digits than its factorization.

61642323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5888 (or 5882 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 61642323 is about 7851.2625099407. The cubic root of 61642323 is about 395.0265922384.

Adding to 61642323 its reverse (32324616), we get a palindrome (93966939).

The spelling of 61642323 in words is "sixty-one million, six hundred forty-two thousand, three hundred twenty-three".