1621102066 has 8 divisors (see below), whose sum is σ = 2446214400. Its totient is φ = 805697268.

The previous prime is 1621102027. The next prime is 1621102073. The reversal of 1621102066 is 6602011261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1621102066.

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, 2426466 + ... + 2427133.

It is an arithmetic number, because the mean of its divisors is an integer number (305776800).

Almost surely, 2^1621102066 is an apocalyptic number.

1621102066 is a deficient number, since it is larger than the sum of its proper divisors (825112334).

1621102066 is a wasteful number, since it uses less digits than its factorization.

1621102066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4853768.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1621102066 is about 40262.9117923679. The cubic root of 1621102066 is about 1174.7265555937.

The spelling of 1621102066 in words is "one billion, six hundred twenty-one million, one hundred two thousand, sixty-six".