740431057 has 4 divisors (see below), whose sum is σ = 740486656. Its totient is φ = 740375460.

The previous prime is 740431051. The next prime is 740431079. The reversal of 740431057 is 750134047.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 740431057 - 2³ = 740431049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740431051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5368 + ... + 38854.

It is an arithmetic number, because the mean of its divisors is an integer number (185121664).

Almost surely, 2^740431057 is an apocalyptic number.

It is an amenable number.

740431057 is a deficient number, since it is larger than the sum of its proper divisors (55599).

740431057 is a wasteful number, since it uses less digits than its factorization.

740431057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55598.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 740431057 is about 27210.8628492373. The cubic root of 740431057 is about 904.6797629722.

The spelling of 740431057 in words is "seven hundred forty million, four hundred thirty-one thousand, fifty-seven".