740621 has 8 divisors (see below), whose sum is σ = 873984. Its totient is φ = 614160.

The previous prime is 740603. The next prime is 740651. The reversal of 740621 is 126047.

740621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-740621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 740593 and 740602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490 + ... + 1923.

It is an arithmetic number, because the mean of its divisors is an integer number (109248).

2⁷⁴⁰⁶²¹ is an apocalyptic number.

It is an amenable number.

740621 is a deficient number, since it is larger than the sum of its proper divisors (133363).

740621 is a wasteful number, since it uses less digits than its factorization.

740621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 740621 is about 860.5933999282. The cubic root of 740621 is about 90.4757115615.

Adding to 740621 its reverse (126047), we get a palindrome (866668).

The spelling of 740621 in words is "seven hundred forty thousand, six hundred twenty-one".