740629665 has 24 divisors (see below), whose sum is σ = 1285900200. Its totient is φ = 394343424.

The previous prime is 740629663. The next prime is 740629717. The reversal of 740629665 is 566926047.

It can be written as a sum of positive squares in 4 ways, for example, as 18740241 + 721889424 = 4329^2 + 26868^2 .

It is not a de Polignac number, because 740629665 - 2¹ = 740629663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 740629665.

It is not an unprimeable number, because it can be changed into a prime (740629663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14161 + ... + 41009.

It is an arithmetic number, because the mean of its divisors is an integer number (53579175).

Almost surely, 2^740629665 is an apocalyptic number.

It is an amenable number.

740629665 is a deficient number, since it is larger than the sum of its proper divisors (545270535).

740629665 is a wasteful number, since it uses less digits than its factorization.

740629665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27473 (or 27470 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 740629665 is about 27214.5120294302. The cubic root of 740629665 is about 904.7606440454.

The spelling of 740629665 in words is "seven hundred forty million, six hundred twenty-nine thousand, six hundred sixty-five".