69076921 has 4 divisors (see below), whose sum is σ = 69228532. Its totient is φ = 68925312.

The previous prime is 69076883. The next prime is 69076937. The reversal of 69076921 is 12967096.

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 54169600 + 14907321 = 7360^2 + 3861^2 .

It is a cyclic number.

It is not a de Polignac number, because 69076921 - 2¹⁹ = 68552633 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69076961) 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, 75120 + ... + 76033.

It is an arithmetic number, because the mean of its divisors is an integer number (17307133).

Almost surely, 2^69076921 is an apocalyptic number.

It is an amenable number.

69076921 is a deficient number, since it is larger than the sum of its proper divisors (151611).

69076921 is a wasteful number, since it uses less digits than its factorization.

69076921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151610.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 69076921 is about 8311.2526733339. The cubic root of 69076921 is about 410.3089501621.

The spelling of 69076921 in words is "sixty-nine million, seventy-six thousand, nine hundred twenty-one".