740417861 has 2 divisors, whose sum is σ = 740417862. Its totient is φ = 740417860.

The previous prime is 740417849. The next prime is 740417921. The reversal of 740417861 is 168714047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731973025 + 8444836 = 27055^2 + 2906^2 .

It is a cyclic number.

It is not a de Polignac number, because 740417861 - 2²⁶ = 673308997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740417801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370208930 + 370208931.

It is an arithmetic number, because the mean of its divisors is an integer number (370208931).

Almost surely, 2^740417861 is an apocalyptic number.

It is an amenable number.

740417861 is a deficient number, since it is larger than the sum of its proper divisors (1).

740417861 is an equidigital number, since it uses as much as digits as its factorization.

740417861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 740417861 is about 27210.6203714653. The cubic root of 740417861 is about 904.6743885240.

The spelling of 740417861 in words is "seven hundred forty million, four hundred seventeen thousand, eight hundred sixty-one".