1405654668 has 48 divisors (see below), whose sum is σ = 3975592320. Its totient is φ = 425955600.

The previous prime is 1405654667. The next prime is 1405654681. The reversal of 1405654668 is 8664565041.

1405654668 is a `hidden beast` number, since 1 + 40 + 5 + 6 + 546 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (1405654667) 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, 590418 + ... + 592793.

It is an arithmetic number, because the mean of its divisors is an integer number (82824840).

Almost surely, 2^1405654668 is an apocalyptic number.

1405654668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1405654668 is an abundant number, since it is smaller than the sum of its proper divisors (2569937652).

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

1405654668 is a wasteful number, since it uses less digits than its factorization.

1405654668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183235 (or 1183227 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 1405654668 is about 37492.0613997150. The cubic root of 1405654668 is about 1120.1930651445.

The spelling of 1405654668 in words is "one billion, four hundred five million, six hundred fifty-four thousand, six hundred sixty-eight".