740307685 has 16 divisors (see below), whose sum is σ = 980043120. Its totient is φ = 533352960.

The previous prime is 740307643. The next prime is 740307703. The reversal of 740307685 is 586703047.

It can be written as a sum of positive squares in 8 ways, for example, as 118004769 + 622302916 = 10863^2 + 24946^2 .

It is a de Polignac number, because none of the positive numbers 2^k-740307685 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136230 + ... + 141559.

It is an arithmetic number, because the mean of its divisors is an integer number (61252695).

Almost surely, 2^740307685 is an apocalyptic number.

It is an amenable number.

740307685 is a deficient number, since it is larger than the sum of its proper divisors (239735435).

740307685 is a wasteful number, since it uses less digits than its factorization.

740307685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277848.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 740307685 is about 27208.5957925065. The cubic root of 740307685 is about 904.6295137062.

The spelling of 740307685 in words is "seven hundred forty million, three hundred seven thousand, six hundred eighty-five".