44721663 has 24 divisors (see below), whose sum is σ = 70260480. Its totient is φ = 25225200.

The previous prime is 44721659. The next prime is 44721667. The reversal of 44721663 is 36612744.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (44721659) and next prime (44721667).

It is not a de Polignac number, because 44721663 - 2² = 44721659 is a prime.

It is a super-3 number, since 3×44721663³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44721667) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 9688 + ... + 13538.

It is an arithmetic number, because the mean of its divisors is an integer number (2927520).

Almost surely, 2^44721663 is an apocalyptic number.

44721663 is a deficient number, since it is larger than the sum of its proper divisors (25538817).

44721663 is a wasteful number, since it uses less digits than its factorization.

44721663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947 (or 3940 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 44721663 is about 6687.4257379054. The cubic root of 44721663 is about 354.9544688018.

The spelling of 44721663 in words is "forty-four million, seven hundred twenty-one thousand, six hundred sixty-three".