1620146 has 8 divisors (see below), whose sum is σ = 2651184. Its totient is φ = 736420.

The previous prime is 1620133. The next prime is 1620161. The reversal of 1620146 is 6410261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1620146² = 5249746122632, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36800 + ... + 36843.

It is an arithmetic number, because the mean of its divisors is an integer number (331398).

2^1620146 is an apocalyptic number.

1620146 is a deficient number, since it is larger than the sum of its proper divisors (1031038).

1620146 is a wasteful number, since it uses less digits than its factorization.

1620146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73656.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1620146 is about 1272.8495590603. The cubic root of 1620146 is about 117.4495573431.

The spelling of 1620146 in words is "one million, six hundred twenty thousand, one hundred forty-six".