723675437 has 2 divisors, whose sum is σ = 723675438. Its totient is φ = 723675436.

The previous prime is 723675413. The next prime is 723675487. The reversal of 723675437 is 734576327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 673350601 + 50324836 = 25949^2 + 7094^2 .

It is a cyclic number.

It is not a de Polignac number, because 723675437 - 2⁶ = 723675373 is a prime.

It is a super-2 number, since 2×723675437² = 1047412276234281938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723675487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361837718 + 361837719.

It is an arithmetic number, because the mean of its divisors is an integer number (361837719).

Almost surely, 2^723675437 is an apocalyptic number.

It is an amenable number.

723675437 is a deficient number, since it is larger than the sum of its proper divisors (1).

723675437 is an equidigital number, since it uses as much as digits as its factorization.

723675437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 740880, while the sum is 44.

The square root of 723675437 is about 26901.2162736186. The cubic root of 723675437 is about 897.8034653224.

The spelling of 723675437 in words is "seven hundred twenty-three million, six hundred seventy-five thousand, four hundred thirty-seven".