720340425773 has 2 divisors, whose sum is σ = 720340425774. Its totient is φ = 720340425772.

The previous prime is 720340425767. The next prime is 720340425787. The reversal of 720340425773 is 377524043027.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 591727100644 + 128613325129 = 769238^2 + 358627^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720340425773 is a prime.

It is a super-3 number, since 3×720340425773³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720340425733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360170212886 + 360170212887.

It is an arithmetic number, because the mean of its divisors is an integer number (360170212887).

Almost surely, 2^720340425773 is an apocalyptic number.

It is an amenable number.

720340425773 is a deficient number, since it is larger than the sum of its proper divisors (1).

720340425773 is an equidigital number, since it uses as much as digits as its factorization.

720340425773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 44.

The spelling of 720340425773 in words is "seven hundred twenty billion, three hundred forty million, four hundred twenty-five thousand, seven hundred seventy-three".