740138585 has 4 divisors (see below), whose sum is σ = 888166308. Its totient is φ = 592110864.

The previous prime is 740138579. The next prime is 740138593. The reversal of 740138585 is 585831047.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82882816 + 657255769 = 9104^2 + 25637^2 .

It is a cyclic number.

It is not a de Polignac number, because 740138585 - 2⁴ = 740138569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74013854 + ... + 74013863.

It is an arithmetic number, because the mean of its divisors is an integer number (222041577).

Almost surely, 2^740138585 is an apocalyptic number.

It is an amenable number.

740138585 is a deficient number, since it is larger than the sum of its proper divisors (148027723).

740138585 is a wasteful number, since it uses less digits than its factorization.

740138585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148027722.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 740138585 is about 27205.4881411821. The cubic root of 740138585 is about 904.5606304105.

The spelling of 740138585 in words is "seven hundred forty million, one hundred thirty-eight thousand, five hundred eighty-five".