740718661 has 4 divisors (see below), whose sum is σ = 740914272. Its totient is φ = 740523052.

The previous prime is 740718659. The next prime is 740718673. The reversal of 740718661 is 166817047.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166817047 = 577 ⋅289111.

It is a cyclic number.

It is not a de Polignac number, because 740718661 - 2¹ = 740718659 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 (740718691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92011 + ... + 99736.

It is an arithmetic number, because the mean of its divisors is an integer number (185228568).

Almost surely, 2^740718661 is an apocalyptic number.

It is an amenable number.

740718661 is a deficient number, since it is larger than the sum of its proper divisors (195611).

740718661 is a wasteful number, since it uses less digits than its factorization.

740718661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195610.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 740718661 is about 27216.1470638296. The cubic root of 740718661 is about 904.7968820634.

The spelling of 740718661 in words is "seven hundred forty million, seven hundred eighteen thousand, six hundred sixty-one".