1604379 has 16 divisors (see below), whose sum is σ = 2574080. Its totient is φ = 868320.

The previous prime is 1604359. The next prime is 1604381. The reversal of 1604379 is 9734061.

1604379 = 332² + 333² + ... + 345².

It is a happy number.

It is not a de Polignac number, because 1604379 - 2⁵ = 1604347 is a prime.

It is a Duffinian number.

1604379 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1604329) 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, 1612 + ... + 2409.

It is an arithmetic number, because the mean of its divisors is an integer number (160880).

2^1604379 is an apocalyptic number.

1604379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1604379 is a deficient number, since it is larger than the sum of its proper divisors (969701).

1604379 is a wasteful number, since it uses less digits than its factorization.

1604379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050.

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

The square root of 1604379 is about 1266.6408330699. The cubic root of 1604379 is about 117.0673146133.

The spelling of 1604379 in words is "one million, six hundred four thousand, three hundred seventy-nine".