740637 has 8 divisors (see below), whose sum is σ = 1097280. Its totient is φ = 493740.

The previous prime is 740603. The next prime is 740651. The reversal of 740637 is 736047.

It is not a de Polignac number, because 740637 - 2¹¹ = 738589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 27431 = 740637 / (7 + 4 + 0 + 6 + 3 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 740637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740687) 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 7 ways as a sum of consecutive naturals, for example, 13689 + ... + 13742.

It is an arithmetic number, because the mean of its divisors is an integer number (137160).

2⁷⁴⁰⁶³⁷ is an apocalyptic number.

It is an amenable number.

740637 is a deficient number, since it is larger than the sum of its proper divisors (356643).

740637 is a wasteful number, since it uses less digits than its factorization.

740637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27440 (or 27434 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 740637 is about 860.6026957894. The cubic root of 740637 is about 90.4763630872.

The spelling of 740637 in words is "seven hundred forty thousand, six hundred thirty-seven".