740736217 has 8 divisors (see below), whose sum is σ = 817173000. Its totient is φ = 667079040.

The previous prime is 740736211. The next prime is 740736221. The reversal of 740736217 is 712637047.

It can be written as a sum of positive squares in 4 ways, for example, as 85581001 + 655155216 = 9251^2 + 25596^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 740736217 - 2¹⁵ = 740703449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740736211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694342 + ... + 695407.

It is an arithmetic number, because the mean of its divisors is an integer number (102146625).

Almost surely, 2^740736217 is an apocalyptic number.

It is an amenable number.

740736217 is a deficient number, since it is larger than the sum of its proper divisors (76436783).

740736217 is a wasteful number, since it uses less digits than its factorization.

740736217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389803.

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

The square root of 740736217 is about 27216.4695910399. The cubic root of 740736217 is about 904.8040302963.

The spelling of 740736217 in words is "seven hundred forty million, seven hundred thirty-six thousand, two hundred seventeen".