1405672660 has 24 divisors (see below), whose sum is σ = 3373614720. Its totient is φ = 481944864.

The previous prime is 1405672657. The next prime is 1405672679. The reversal of 1405672660 is 662765041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5020120 + ... + 5020399.

It is an arithmetic number, because the mean of its divisors is an integer number (140567280).

Almost surely, 2^1405672660 is an apocalyptic number.

1405672660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1405672660 is an abundant number, since it is smaller than the sum of its proper divisors (1967942060).

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

1405672660 is a wasteful number, since it uses less digits than its factorization.

1405672660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10040535 (or 10040533 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1405672660 is about 37492.3013430758. The cubic root of 1405672660 is about 1120.1978445136.

The spelling of 1405672660 in words is "one billion, four hundred five million, six hundred seventy-two thousand, six hundred sixty".