720422632340 has 12 divisors (see below), whose sum is σ = 1512887527956. Its totient is φ = 288169052928.

The previous prime is 720422632327. The next prime is 720422632393. The reversal of 720422632340 is 43236224027.

It can be written as a sum of positive squares in 2 ways, for example, as 442217020036 + 278205612304 = 664994^2 + 527452^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 720422632340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18010565789 + ... + 18010565828.

It is an arithmetic number, because the mean of its divisors is an integer number (126073960663).

Almost surely, 2^720422632340 is an apocalyptic number.

It is an amenable number.

720422632340 is an abundant number, since it is smaller than the sum of its proper divisors (792464895616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720422632340 is a wasteful number, since it uses less digits than its factorization.

720422632340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36021131626 (or 36021131624 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 35.

Adding to 720422632340 its reverse (43236224027), we get a palindrome (763658856367).

The spelling of 720422632340 in words is "seven hundred twenty billion, four hundred twenty-two million, six hundred thirty-two thousand, three hundred forty".