8374763521 has 4 divisors (see below), whose sum is σ = 8663548500. Its totient is φ = 8085978544.

The previous prime is 8374763459. The next prime is 8374763539. The reversal of 8374763521 is 1253674738.

It is a happy number.

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 6483470400 + 1891293121 = 80520^2 + 43489^2 .

It is a cyclic number.

It is not a de Polignac number, because 8374763521 - 2¹³ = 8374755329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8374763591) 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 3 ways as a sum of consecutive naturals, for example, 144392446 + ... + 144392503.

It is an arithmetic number, because the mean of its divisors is an integer number (2165887125).

Almost surely, 2^8374763521 is an apocalyptic number.

It is an amenable number.

8374763521 is a deficient number, since it is larger than the sum of its proper divisors (288784979).

8374763521 is a wasteful number, since it uses less digits than its factorization.

8374763521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288784978.

The product of its digits is 846720, while the sum is 46.

The square root of 8374763521 is about 91513.7340566977. The cubic root of 8374763521 is about 2030.7549361955.

The spelling of 8374763521 in words is "eight billion, three hundred seventy-four million, seven hundred sixty-three thousand, five hundred twenty-one".