406623703 has 4 divisors (see below), whose sum is σ = 420645240. Its totient is φ = 392602168.

The previous prime is 406623689. The next prime is 406623733. The reversal of 406623703 is 307326604.

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

It is a cyclic number.

It is not a de Polignac number, because 406623703 - 2¹³ = 406615511 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406623733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7010725 + ... + 7010782.

It is an arithmetic number, because the mean of its divisors is an integer number (105161310).

Almost surely, 2^406623703 is an apocalyptic number.

406623703 is a deficient number, since it is larger than the sum of its proper divisors (14021537).

406623703 is a wasteful number, since it uses less digits than its factorization.

406623703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14021536.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 406623703 is about 20164.9126702795. The cubic root of 406623703 is about 740.8510436404.

The spelling of 406623703 in words is "four hundred six million, six hundred twenty-three thousand, seven hundred three".