624220407 has 12 divisors (see below), whose sum is σ = 903325384. Its totient is φ = 415374480.

The previous prime is 624220397. The next prime is 624220409. The reversal of 624220407 is 704022426.

It is a happy number.

It is not a de Polignac number, because 624220407 - 2⁶ = 624220343 is a prime.

It is a super-2 number, since 2×624220407² = 779302233030491298, 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 (624220409) 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 11 ways as a sum of consecutive naturals, for example, 59233 + ... + 68970.

Almost surely, 2^624220407 is an apocalyptic number.

624220407 is a deficient number, since it is larger than the sum of its proper divisors (279104977).

624220407 is a wasteful number, since it uses less digits than its factorization.

624220407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128750 (or 128747 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 624220407 is about 24984.4032748433. The cubic root of 624220407 is about 854.6323360219.

The spelling of 624220407 in words is "six hundred twenty-four million, two hundred twenty thousand, four hundred seven".