740513261 has 2 divisors, whose sum is σ = 740513262. Its totient is φ = 740513260.

The previous prime is 740513243. The next prime is 740513273. The reversal of 740513261 is 162315047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405257161 + 335256100 = 20131^2 + 18310^2 .

It is a cyclic number.

It is not a de Polignac number, because 740513261 - 2¹⁸ = 740251117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740513861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370256630 + 370256631.

It is an arithmetic number, because the mean of its divisors is an integer number (370256631).

Almost surely, 2^740513261 is an apocalyptic number.

It is an amenable number.

740513261 is a deficient number, since it is larger than the sum of its proper divisors (1).

740513261 is an equidigital number, since it uses as much as digits as its factorization.

740513261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 740513261 is about 27212.3733070087. The cubic root of 740513261 is about 904.7132414631.

The spelling of 740513261 in words is "seven hundred forty million, five hundred thirteen thousand, two hundred sixty-one".