740673217 has 2 divisors, whose sum is σ = 740673218. Its totient is φ = 740673216.

The previous prime is 740673211. The next prime is 740673239. The reversal of 740673217 is 712376047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516152961 + 224520256 = 22719^2 + 14984^2 .

It is a cyclic number.

It is not a de Polignac number, because 740673217 - 2¹⁵ = 740640449 is a prime.

It is a super-2 number, since 2×740673217² = 1097193628762258178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (740673211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370336608 + 370336609.

It is an arithmetic number, because the mean of its divisors is an integer number (370336609).

Almost surely, 2^740673217 is an apocalyptic number.

It is an amenable number.

740673217 is a deficient number, since it is larger than the sum of its proper divisors (1).

740673217 is an equidigital number, since it uses as much as digits as its factorization.

740673217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 740673217 is about 27215.3121789922. The cubic root of 740673217 is about 904.7783782182.

It can be divided in two parts, 74067 and 3217, that added together give a square (77284 = 278²).

The spelling of 740673217 in words is "seven hundred forty million, six hundred seventy-three thousand, two hundred seventeen".