61112999 has 4 divisors (see below), whose sum is σ = 61653936. Its totient is φ = 60572064.

The previous prime is 61112993. The next prime is 61113023. The reversal of 61112999 is 99921116.

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

It is a cyclic number.

It is not a de Polignac number, because 61112999 - 2⁸ = 61112743 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 (61112993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270299 + ... + 270524.

It is an arithmetic number, because the mean of its divisors is an integer number (15413484).

Almost surely, 2^61112999 is an apocalyptic number.

61112999 is a deficient number, since it is larger than the sum of its proper divisors (540937).

61112999 is a wasteful number, since it uses less digits than its factorization.

61112999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540936.

The product of its digits is 8748, while the sum is 38.

The square root of 61112999 is about 7817.4803485522. The cubic root of 61112999 is about 393.8926395449.

The spelling of 61112999 in words is "sixty-one million, one hundred twelve thousand, nine hundred ninety-nine".