736947121 has 4 divisors (see below), whose sum is σ = 744544612. Its totient is φ = 729349632.

The previous prime is 736947103. The next prime is 736947131. The reversal of 736947121 is 121749637.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162817600 + 574129521 = 12760^2 + 23961^2 .

It is a cyclic number.

It is not a de Polignac number, because 736947121 - 2⁵ = 736947089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (736947131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3798600 + ... + 3798793.

It is an arithmetic number, because the mean of its divisors is an integer number (186136153).

Almost surely, 2^736947121 is an apocalyptic number.

It is an amenable number.

736947121 is a deficient number, since it is larger than the sum of its proper divisors (7597491).

736947121 is an equidigital number, since it uses as much as digits as its factorization.

736947121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7597490.

The product of its digits is 63504, while the sum is 40.

The square root of 736947121 is about 27146.7699920267. The cubic root of 736947121 is about 903.2586075661.

The spelling of 736947121 in words is "seven hundred thirty-six million, nine hundred forty-seven thousand, one hundred twenty-one".