740546921 has 2 divisors, whose sum is σ = 740546922. Its totient is φ = 740546920.

The previous prime is 740546909. The next prime is 740546951. The reversal of 740546921 is 129645047.

740546921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391604521 + 348942400 = 19789^2 + 18680^2 .

It is a cyclic number.

It is not a de Polignac number, because 740546921 - 2⁶ = 740546857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (740546951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370273460 + 370273461.

It is an arithmetic number, because the mean of its divisors is an integer number (370273461).

Almost surely, 2^740546921 is an apocalyptic number.

It is an amenable number.

740546921 is a deficient number, since it is larger than the sum of its proper divisors (1).

740546921 is an equidigital number, since it uses as much as digits as its factorization.

740546921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 740546921 is about 27212.9917686387. The cubic root of 740546921 is about 904.7269491565.

The spelling of 740546921 in words is "seven hundred forty million, five hundred forty-six thousand, nine hundred twenty-one".