1405664712 has 32 divisors (see below), whose sum is σ = 3904624800. Its totient is φ = 468554832.

The previous prime is 1405664699. The next prime is 1405664717. The reversal of 1405664712 is 2174665041.

1405664712 is a `hidden beast` number, since 1 + 4 + 0 + 5 + 6 + 647 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1405664717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3253638 + ... + 3254069.

It is an arithmetic number, because the mean of its divisors is an integer number (122019525).

Almost surely, 2^1405664712 is an apocalyptic number.

1405664712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1405664712 is an abundant number, since it is smaller than the sum of its proper divisors (2498960088).

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

1405664712 is a wasteful number, since it uses less digits than its factorization.

1405664712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6507722 (or 6507712 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1405664712 is about 37492.1953478321. The cubic root of 1405664712 is about 1120.1957332233.

The spelling of 1405664712 in words is "one billion, four hundred five million, six hundred sixty-four thousand, seven hundred twelve".