740712621 has 16 divisors (see below), whose sum is σ = 1100325888. Its totient is φ = 439364400.

The previous prime is 740712617. The next prime is 740712653. The reversal of 740712621 is 126217047.

It is not a de Polignac number, because 740712621 - 2² = 740712617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740712221) 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 15 ways as a sum of consecutive naturals, for example, 237235 + ... + 240336.

It is an arithmetic number, because the mean of its divisors is an integer number (68770368).

Almost surely, 2^740712621 is an apocalyptic number.

It is an amenable number.

740712621 is a deficient number, since it is larger than the sum of its proper divisors (359613267).

740712621 is a wasteful number, since it uses less digits than its factorization.

740712621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477632.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 740712621 is about 27216.0361000642. The cubic root of 740712621 is about 904.7944227455.

Adding to 740712621 its reverse (126217047), we get a palindrome (866929668).

The spelling of 740712621 in words is "seven hundred forty million, seven hundred twelve thousand, six hundred twenty-one".