726961237 has 4 divisors (see below), whose sum is σ = 746608876. Its totient is φ = 707313600.

The previous prime is 726961211. The next prime is 726961247. The reversal of 726961237 is 732169627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 732169627 = 7 ⋅104595661.

It can be written as a sum of positive squares in 2 ways, for example, as 623450961 + 103510276 = 24969^2 + 10174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726961237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726961193 and 726961202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726961247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9823764 + ... + 9823837.

It is an arithmetic number, because the mean of its divisors is an integer number (186652219).

Almost surely, 2^726961237 is an apocalyptic number.

It is an amenable number.

726961237 is a deficient number, since it is larger than the sum of its proper divisors (19647639).

726961237 is a wasteful number, since it uses less digits than its factorization.

726961237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19647638.

The product of its digits is 190512, while the sum is 43.

The square root of 726961237 is about 26962.2186957973. The cubic root of 726961237 is about 899.1602195341.

The spelling of 726961237 in words is "seven hundred twenty-six million, nine hundred sixty-one thousand, two hundred thirty-seven".