740242687 has 8 divisors (see below), whose sum is σ = 744936192. Its totient is φ = 735562200.

The previous prime is 740242667. The next prime is 740242709. The reversal of 740242687 is 786242047.

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

It is a de Polignac number, because none of the positive numbers 2^k-740242687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740242667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126762 + ... + 132472.

It is an arithmetic number, because the mean of its divisors is an integer number (93117024).

Almost surely, 2^740242687 is an apocalyptic number.

740242687 is a deficient number, since it is larger than the sum of its proper divisors (4693505).

740242687 is a wasteful number, since it uses less digits than its factorization.

740242687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6509.

The product of its (nonzero) digits is 150528, while the sum is 40.

The square root of 740242687 is about 27207.4013275800. The cubic root of 740242687 is about 904.6030378542.

The spelling of 740242687 in words is "seven hundred forty million, two hundred forty-two thousand, six hundred eighty-seven".