3621975 has 24 divisors (see below), whose sum is σ = 6844800. Its totient is φ = 1655520.

The previous prime is 3621973. The next prime is 3621977. The reversal of 3621975 is 5791263.

3621975 = T₁₇₄ + T₁₇₅ + ... + T₂₉₉.

It is an interprime number because it is at equal distance from previous prime (3621973) and next prime (3621977).

It is not a de Polignac number, because 3621975 - 2¹ = 3621973 is a prime.

3621975 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2925 + ... + 3974.

It is an arithmetic number, because the mean of its divisors is an integer number (285200).

Almost surely, 2^3621975 is an apocalyptic number.

3621975 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3621975 is a deficient number, since it is larger than the sum of its proper divisors (3222825).

3621975 is a wasteful number, since it uses less digits than its factorization.

3621975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6919 (or 6914 counting only the distinct ones).

The product of its digits is 11340, while the sum is 33.

The square root of 3621975 is about 1903.1487067489. The cubic root of 3621975 is about 153.5730994693.

The spelling of 3621975 in words is "three million, six hundred twenty-one thousand, nine hundred seventy-five".