1616994 has 12 divisors (see below), whose sum is σ = 3503526. Its totient is φ = 538992.

The previous prime is 1616983. The next prime is 1617019. The reversal of 1616994 is 4996161.

It can be written as a sum of positive squares in only one way, i.e., 1238769 + 378225 = 1113^2 + 615^2 .

It is a super-2 number, since 2×1616994² = 5229339192072, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44899 + ... + 44934.

2^1616994 is an apocalyptic number.

1616994 is an abundant number, since it is smaller than the sum of its proper divisors (1886532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1616994 is a wasteful number, since it uses less digits than its factorization.

1616994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89841 (or 89838 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 1616994 is about 1271.6107895107. The cubic root of 1616994 is about 117.3733417139.

The spelling of 1616994 in words is "one million, six hundred sixteen thousand, nine hundred ninety-four".