1622261660 has 24 divisors (see below), whose sum is σ = 3409430640. Its totient is φ = 648393984.

The previous prime is 1622261657. The next prime is 1622261701. The reversal of 1622261660 is 661622261.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5330 + ... + 57209.

It is an arithmetic number, because the mean of its divisors is an integer number (142059610).

Almost surely, 2^1622261660 is an apocalyptic number.

1622261660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1622261660 is an abundant number, since it is smaller than the sum of its proper divisors (1787168980).

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

1622261660 is a wasteful number, since it uses less digits than its factorization.

1622261660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63845 (or 63843 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1622261660 is about 40277.3094930632. The cubic root of 1622261660 is about 1175.0065875593.

The spelling of 1622261660 in words is "one billion, six hundred twenty-two million, two hundred sixty-one thousand, six hundred sixty".