740374257 has 16 divisors (see below), whose sum is σ = 1130895360. Its totient is φ = 422056272.

The previous prime is 740374253. The next prime is 740374279. The reversal of 740374257 is 752473047.

It is not a de Polignac number, because 740374257 - 2² = 740374253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (740374253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33273 + ... + 50870.

It is an arithmetic number, because the mean of its divisors is an integer number (70680960).

Almost surely, 2^740374257 is an apocalyptic number.

It is an amenable number.

740374257 is a deficient number, since it is larger than the sum of its proper divisors (390521103).

740374257 is a wasteful number, since it uses less digits than its factorization.

740374257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84572.

The product of its (nonzero) digits is 164640, while the sum is 39.

The square root of 740374257 is about 27209.8191283955. The cubic root of 740374257 is about 904.6566290945.

The spelling of 740374257 in words is "seven hundred forty million, three hundred seventy-four thousand, two hundred fifty-seven".