740480721 has 4 divisors (see below), whose sum is σ = 987307632. Its totient is φ = 493653812.

The previous prime is 740480707. The next prime is 740480759. The reversal of 740480721 is 127084047.

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: 127084047 = 3 ⋅42361349.

It is a cyclic number.

It is not a de Polignac number, because 740480721 - 2¹³ = 740472529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (740480701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123413451 + ... + 123413456.

It is an arithmetic number, because the mean of its divisors is an integer number (246826908).

Almost surely, 2^740480721 is an apocalyptic number.

It is an amenable number.

740480721 is a deficient number, since it is larger than the sum of its proper divisors (246826911).

740480721 is a wasteful number, since it uses less digits than its factorization.

740480721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246826910.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 740480721 is about 27211.7754106563. The cubic root of 740480721 is about 904.6999894834.

The spelling of 740480721 in words is "seven hundred forty million, four hundred eighty thousand, seven hundred twenty-one".