720293387401 has 27 divisors (see below), whose sum is σ = 842918772423. Its totient is φ = 613712667120.

The previous prime is 720293387399. The next prime is 720293387467. The reversal of 720293387401 is 104783392027.

The square root of 720293387401 is 848701.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 230881211001 + 489412176400 = 480501^2 + 699580^2 .

It is not a de Polignac number, because 720293387401 - 2¹ = 720293387399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (720293382401) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1562458311 + ... + 1562458771.

Almost surely, 2^720293387401 is an apocalyptic number.

720293387401 is the 848701-st square number.

720293387401 is the 424351-st centered octagonal number.

It is an amenable number.

720293387401 is a deficient number, since it is larger than the sum of its proper divisors (122625385022).

720293387401 is an frugal number, since it uses more digits than its factorization.

720293387401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 720293387401 in words is "seven hundred twenty billion, two hundred ninety-three million, three hundred eighty-seven thousand, four hundred one".