732742621 has 8 divisors (see below), whose sum is σ = 789354104. Its totient is φ = 676166400.

The previous prime is 732742603. The next prime is 732742631. The reversal of 732742621 is 126247237.

It can be written as a sum of positive squares in 4 ways, for example, as 13912900 + 718829721 = 3730^2 + 26811^2 .

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

It is not a de Polignac number, because 732742621 - 2⁵ = 732742589 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 (732742631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47905 + ... + 61321.

It is an arithmetic number, because the mean of its divisors is an integer number (98669263).

Almost surely, 2^732742621 is an apocalyptic number.

It is an amenable number.

732742621 is a deficient number, since it is larger than the sum of its proper divisors (56611483).

732742621 is a wasteful number, since it uses less digits than its factorization.

732742621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17631.

The product of its digits is 28224, while the sum is 34.

The square root of 732742621 is about 27069.2190688982. The cubic root of 732742621 is about 901.5375450388.

Adding to 732742621 its reverse (126247237), we get a palindrome (858989858).

The spelling of 732742621 in words is "seven hundred thirty-two million, seven hundred forty-two thousand, six hundred twenty-one".