720654350345 has 16 divisors (see below), whose sum is σ = 867879634320. Its totient is φ = 574461947904.

The previous prime is 720654350321. The next prime is 720654350407. The reversal of 720654350345 is 543053456027.

It can be written as a sum of positive squares in 8 ways, for example, as 190001835664 + 530652514681 = 435892^2 + 728459^2 .

It is a cyclic number.

It is not a de Polignac number, because 720654350345 - 2²² = 720650156041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720654350296 and 720654350305.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4071551 + ... + 4244859.

It is an arithmetic number, because the mean of its divisors is an integer number (54242477145).

Almost surely, 2^720654350345 is an apocalyptic number.

It is an amenable number.

720654350345 is a deficient number, since it is larger than the sum of its proper divisors (147225283975).

720654350345 is a wasteful number, since it uses less digits than its factorization.

720654350345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176284.

The product of its (nonzero) digits is 1512000, while the sum is 44.

The spelling of 720654350345 in words is "seven hundred twenty billion, six hundred fifty-four million, three hundred fifty thousand, three hundred forty-five".