2679011661 has 8 divisors (see below), whose sum is σ = 3687241984. Its totient is φ = 1728394560.

The previous prime is 2679011659. The next prime is 2679011663. The reversal of 2679011661 is 1661109762.

It is an interprime number because it is at equal distance from previous prime (2679011659) and next prime (2679011663).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2679011661 - 2¹ = 2679011659 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 (2679011663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14403196 + ... + 14403381.

It is an arithmetic number, because the mean of its divisors is an integer number (460905248).

Almost surely, 2^2679011661 is an apocalyptic number.

It is an amenable number.

2679011661 is a deficient number, since it is larger than the sum of its proper divisors (1008230323).

2679011661 is a wasteful number, since it uses less digits than its factorization.

2679011661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28806611.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 2679011661 is about 51759.1698252590. The cubic root of 2679011661 is about 1388.8591403095.

The spelling of 2679011661 in words is "two billion, six hundred seventy-nine million, eleven thousand, six hundred sixty-one".