726290977 has 2 divisors, whose sum is σ = 726290978. Its totient is φ = 726290976.

The previous prime is 726290951. The next prime is 726291011. The reversal of 726290977 is 779092627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 716311696 + 9979281 = 26764^2 + 3159^2 .

It is a cyclic number.

It is not a de Polignac number, because 726290977 - 2¹⁹ = 725766689 is a prime.

It is a super-2 number, since 2×726290977² = 1054997166543229058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 726290977.

It is not a weakly prime, because it can be changed into another prime (726290947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363145488 + 363145489.

It is an arithmetic number, because the mean of its divisors is an integer number (363145489).

Almost surely, 2^726290977 is an apocalyptic number.

It is an amenable number.

726290977 is a deficient number, since it is larger than the sum of its proper divisors (1).

726290977 is an equidigital number, since it uses as much as digits as its factorization.

726290977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 726290977 is about 26949.7862143654. The cubic root of 726290977 is about 898.8837919364.

The spelling of 726290977 in words is "seven hundred twenty-six million, two hundred ninety thousand, nine hundred seventy-seven".