61113867 has 4 divisors (see below), whose sum is σ = 81485160. Its totient is φ = 40742576.

The previous prime is 61113863. The next prime is 61113869. The reversal of 61113867 is 76831116.

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 61113867 - 2² = 61113863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61113863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10185642 + ... + 10185647.

It is an arithmetic number, because the mean of its divisors is an integer number (20371290).

Almost surely, 2^61113867 is an apocalyptic number.

61113867 is a deficient number, since it is larger than the sum of its proper divisors (20371293).

61113867 is a wasteful number, since it uses less digits than its factorization.

61113867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20371292.

The product of its digits is 6048, while the sum is 33.

The square root of 61113867 is about 7817.5358649641. The cubic root of 61113867 is about 393.8945043811.

The spelling of 61113867 in words is "sixty-one million, one hundred thirteen thousand, eight hundred sixty-seven".