1616979 has 16 divisors (see below), whose sum is σ = 2653952. Its totient is φ = 852768.

The previous prime is 1616963. The next prime is 1616983. The reversal of 1616979 is 9796161.

It is not a de Polignac number, because 1616979 - 2⁴ = 1616963 is a prime.

It is a super-2 number, since 2×1616979² = 5229242172882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1616939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2689 + ... + 3234.

It is an arithmetic number, because the mean of its divisors is an integer number (165872).

2^1616979 is an apocalyptic number.

1616979 is a deficient number, since it is larger than the sum of its proper divisors (1036973).

1616979 is a wasteful number, since it uses less digits than its factorization.

1616979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946.

The product of its digits is 20412, while the sum is 39.

The square root of 1616979 is about 1271.6048914659. The cubic root of 1616979 is about 117.3729787760.

It can be divided in two parts, 161 and 6979, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 1616979 in words is "one million, six hundred sixteen thousand, nine hundred seventy-nine".