406745682 has 32 divisors (see below), whose sum is σ = 944951424. Its totient is φ = 114307200.

The previous prime is 406745681. The next prime is 406745687. The reversal of 406745682 is 286547604.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (406745681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76819 + ... + 81942.

It is an arithmetic number, because the mean of its divisors is an integer number (29529732).

Almost surely, 2^406745682 is an apocalyptic number.

406745682 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

406745682 is an abundant number, since it is smaller than the sum of its proper divisors (538205742).

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

406745682 is a wasteful number, since it uses less digits than its factorization.

406745682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158834.

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 406745682 is about 20167.9369792748. The cubic root of 406745682 is about 740.9251164126.

The spelling of 406745682 in words is "four hundred six million, seven hundred forty-five thousand, six hundred eighty-two".