1622653660 has 12 divisors (see below), whose sum is σ = 3407572728. Its totient is φ = 649061456.

The previous prime is 1622653651. The next prime is 1622653693. The reversal of 1622653660 is 663562261.

It is a super-2 number, since 2×1622653660² = 5266009800622791200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40566322 + ... + 40566361.

It is an arithmetic number, because the mean of its divisors is an integer number (283964394).

Almost surely, 2^1622653660 is an apocalyptic number.

1622653660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1622653660 is an abundant number, since it is smaller than the sum of its proper divisors (1784919068).

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

1622653660 is a wasteful number, since it uses less digits than its factorization.

1622653660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81132692 (or 81132690 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 1622653660 is about 40282.1754626038. The cubic root of 1622653660 is about 1175.1012220026.

The spelling of 1622653660 in words is "one billion, six hundred twenty-two million, six hundred fifty-three thousand, six hundred sixty".