70720360489 has 9 divisors (see below), whose sum is σ = 71454632869. Its totient is φ = 69993565600.

The previous prime is 70720360433. The next prime is 70720360493. The reversal of 70720360489 is 98406302707.

The square root of 70720360489 is 265933.

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

It can be written as a sum of positive squares in 4 ways, for example, as 3280425625 + 67439934864 = 57275^2 + 259692^2 .

It is not a de Polignac number, because 70720360489 - 2¹⁵ = 70720327721 is a prime.

It is a super-2 number, since 2×70720360489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70720360429) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26857917 + ... + 26860549.

Almost surely, 2^70720360489 is an apocalyptic number.

70720360489 is the 265933-rd square number.

70720360489 is the 132967-th centered octagonal number.

It is an amenable number.

70720360489 is a deficient number, since it is larger than the sum of its proper divisors (734272380).

70720360489 is an frugal number, since it uses more digits than its factorization.

70720360489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468 (or 2734 counting only the distinct ones).

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

The spelling of 70720360489 in words is "seventy billion, seven hundred twenty million, three hundred sixty thousand, four hundred eighty-nine".