76285921 has 8 divisors (see below), whose sum is σ = 80407080. Its totient is φ = 72264192.

The previous prime is 76285903. The next prime is 76285927. The reversal of 76285921 is 12958267.

It can be written as a sum of positive squares in 4 ways, for example, as 10497600 + 65788321 = 3240^2 + 8111^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 76285921 - 2¹⁹ = 75761633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76285927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23280 + ... + 26353.

It is an arithmetic number, because the mean of its divisors is an integer number (10050885).

Almost surely, 2^76285921 is an apocalyptic number.

It is an amenable number.

76285921 is a deficient number, since it is larger than the sum of its proper divisors (4121159).

76285921 is a wasteful number, since it uses less digits than its factorization.

76285921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49715.

The product of its digits is 60480, while the sum is 40.

The square root of 76285921 is about 8734.1811865795. The cubic root of 76285921 is about 424.1128826801.

The spelling of 76285921 in words is "seventy-six million, two hundred eighty-five thousand, nine hundred twenty-one".