61843679 has 4 divisors (see below), whose sum is σ = 61942320. Its totient is φ = 61745040.

The previous prime is 61843673. The next prime is 61843693. The reversal of 61843679 is 97634816.

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 61843679 - 2²⁰ = 60795103 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 (61843673) 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, 48374 + ... + 49635.

It is an arithmetic number, because the mean of its divisors is an integer number (15485580).

Almost surely, 2^61843679 is an apocalyptic number.

61843679 is a deficient number, since it is larger than the sum of its proper divisors (98641).

61843679 is an equidigital number, since it uses as much as digits as its factorization.

61843679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98640.

The product of its digits is 217728, while the sum is 44.

The square root of 61843679 is about 7864.0752158153. The cubic root of 61843679 is about 395.4562457623.

The spelling of 61843679 in words is "sixty-one million, eight hundred forty-three thousand, six hundred seventy-nine".