740087621 has 12 divisors (see below), whose sum is σ = 927143532. Its totient is φ = 585563328.

The previous prime is 740087611. The next prime is 740087659. The reversal of 740087621 is 126780047.

It is a happy number.

740087621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 327429025 + 412658596 = 18095^2 + 20314^2 .

It is not a de Polignac number, because 740087621 - 2²² = 735893317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740087611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 580280 + ... + 581553.

It is an arithmetic number, because the mean of its divisors is an integer number (77261961).

Almost surely, 2^740087621 is an apocalyptic number.

It is an amenable number.

740087621 is a deficient number, since it is larger than the sum of its proper divisors (187055911).

740087621 is a wasteful number, since it uses less digits than its factorization.

740087621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161860 (or 1161853 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 740087621 is about 27204.5514758101. The cubic root of 740087621 is about 904.5398680438.

The spelling of 740087621 in words is "seven hundred forty million, eighty-seven thousand, six hundred twenty-one".