1661679244 has 12 divisors (see below), whose sum is σ = 2908304784. Its totient is φ = 830735024.

The previous prime is 1661679233. The next prime is 1661679269. The reversal of 1661679244 is 4429761661.

It is a super-2 number, since 2×1661679244² = 5522355819880823072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1661679194 and 1661679203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17802 + ... + 60334.

It is an arithmetic number, because the mean of its divisors is an integer number (242358732).

Almost surely, 2^1661679244 is an apocalyptic number.

It is an amenable number.

1661679244 is a deficient number, since it is larger than the sum of its proper divisors (1246625540).

1661679244 is a wasteful number, since it uses less digits than its factorization.

1661679244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52304 (or 52302 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 1661679244 is about 40763.7000773973. The cubic root of 1661679244 is about 1184.4472711718.

The spelling of 1661679244 in words is "one billion, six hundred sixty-one million, six hundred seventy-nine thousand, two hundred forty-four".