1620364 has 6 divisors (see below), whose sum is σ = 2835644. Its totient is φ = 810180.

The previous prime is 1620347. The next prime is 1620371. The reversal of 1620364 is 4630261.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202542 + ... + 202549.

2^1620364 is an apocalyptic number.

It is an amenable number.

1620364 is a deficient number, since it is larger than the sum of its proper divisors (1215280).

1620364 is a wasteful number, since it uses less digits than its factorization.

1620364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405095 (or 405093 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1620364 is about 1272.9351908090. The cubic root of 1620364 is about 117.4548249456.

The spelling of 1620364 in words is "one million, six hundred twenty thousand, three hundred sixty-four".