406646400604 has 12 divisors (see below), whose sum is σ = 736170208200. Its totient is φ = 196312055408.

The previous prime is 406646400571. The next prime is 406646400623. The reversal of 406646400604 is 406004646604.

It is a happy number.

It is a super-2 number, since 2×406646400604² (a number of 24 digits) contains 22 as substring.

It is a congruent 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, 1752786094 + ... + 1752786325.

It is an arithmetic number, because the mean of its divisors is an integer number (61347517350).

Almost surely, 2^406646400604 is an apocalyptic number.

It is an amenable number.

406646400604 is a deficient number, since it is larger than the sum of its proper divisors (329523807596).

406646400604 is a wasteful number, since it uses less digits than its factorization.

406646400604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505572452 (or 3505572450 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 406646400604 in words is "four hundred six billion, six hundred forty-six million, four hundred thousand, six hundred four".