3257623407 has 4 divisors (see below), whose sum is σ = 4343497880. Its totient is φ = 2171748936.

The previous prime is 3257623399. The next prime is 3257623441. The reversal of 3257623407 is 7043267523.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3257623407 - 2³ = 3257623399 is a prime.

It is a super-2 number, since 2×3257623407² = 21224220523668575298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3257623477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542937232 + ... + 542937237.

It is an arithmetic number, because the mean of its divisors is an integer number (1085874470).

Almost surely, 2^3257623407 is an apocalyptic number.

3257623407 is a deficient number, since it is larger than the sum of its proper divisors (1085874473).

3257623407 is a wasteful number, since it uses less digits than its factorization.

3257623407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085874472.

The product of its (nonzero) digits is 211680, while the sum is 39.

The square root of 3257623407 is about 57075.5937945458. The cubic root of 3257623407 is about 1482.4052997339.

The spelling of 3257623407 in words is "three billion, two hundred fifty-seven million, six hundred twenty-three thousand, four hundred seven".