406621064 has 64 divisors (see below), whose sum is σ = 816480000. Its totient is φ = 189511168.

The previous prime is 406621043. The next prime is 406621073. The reversal of 406621064 is 460126604.

It is a super-3 number, since 3×406621064³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 970247 + ... + 970665.

It is an arithmetic number, because the mean of its divisors is an integer number (12757500).

Almost surely, 2^406621064 is an apocalyptic number.

It is an amenable number.

406621064 is an abundant number, since it is smaller than the sum of its proper divisors (409858936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406621064 is a wasteful number, since it uses less digits than its factorization.

406621064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 406621064 is about 20164.8472347300. The cubic root of 406621064 is about 740.8494409218.

Adding to 406621064 its reverse (460126604), we get a palindrome (866747668).

The spelling of 406621064 in words is "four hundred six million, six hundred twenty-one thousand, sixty-four".