747413621 has 4 divisors (see below), whose sum is σ = 786751200. Its totient is φ = 708076044.

The previous prime is 747413587. The next prime is 747413647. The reversal of 747413621 is 126314747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 747413621 - 2¹⁰ = 747412597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747413021) 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, 19668761 + ... + 19668798.

It is an arithmetic number, because the mean of its divisors is an integer number (196687800).

Almost surely, 2^747413621 is an apocalyptic number.

It is an amenable number.

747413621 is a deficient number, since it is larger than the sum of its proper divisors (39337579).

747413621 is a wasteful number, since it uses less digits than its factorization.

747413621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39337578.

The product of its digits is 28224, while the sum is 35.

The square root of 747413621 is about 27338.8664907673. The cubic root of 747413621 is about 907.5147019047.

The spelling of 747413621 in words is "seven hundred forty-seven million, four hundred thirteen thousand, six hundred twenty-one".