1721246564 has 12 divisors (see below), whose sum is σ = 3015465600. Its totient is φ = 859684968.

The previous prime is 1721246557. The next prime is 1721246567. The reversal of 1721246564 is 4656421271.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1721246567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230444 + ... + 237795.

It is an arithmetic number, because the mean of its divisors is an integer number (251288800).

Almost surely, 2^1721246564 is an apocalyptic number.

It is an amenable number.

1721246564 is a deficient number, since it is larger than the sum of its proper divisors (1294219036).

1721246564 is a wasteful number, since it uses less digits than its factorization.

1721246564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469162 (or 469160 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 1721246564 is about 41487.9086481833. The cubic root of 1721246564 is about 1198.4346636192.

The spelling of 1721246564 in words is "one billion, seven hundred twenty-one million, two hundred forty-six thousand, five hundred sixty-four".