1613667 has 16 divisors (see below), whose sum is σ = 2374272. Its totient is φ = 966720.

The previous prime is 1613653. The next prime is 1613669. The reversal of 1613667 is 7663161.

It is not a de Polignac number, because 1613667 - 2⁷ = 1613539 is a prime.

1613667 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1613669) 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, 3303 + ... + 3759.

It is an arithmetic number, because the mean of its divisors is an integer number (148392).

2^1613667 is an apocalyptic number.

1613667 is a deficient number, since it is larger than the sum of its proper divisors (760605).

1613667 is a wasteful number, since it uses less digits than its factorization.

1613667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578.

The product of its digits is 4536, while the sum is 30.

The square root of 1613667 is about 1270.3019326129. The cubic root of 1613667 is about 117.2927870477.

It can be divided in two parts, 161 and 3667, that added together give a triangular number (3828 = T₈₇).

The spelling of 1613667 in words is "one million, six hundred thirteen thousand, six hundred sixty-seven".