69379021 has 8 divisors (see below), whose sum is σ = 71220888. Its totient is φ = 67560000.

The previous prime is 69379001. The next prime is 69379039. The reversal of 69379021 is 12097396.

It can be written as a sum of positive squares in 4 ways, for example, as 30802500 + 38576521 = 5550^2 + 6211^2 .

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 69379021 - 2⁷ = 69378893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69379001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531 + ... + 11791.

It is an arithmetic number, because the mean of its divisors is an integer number (8902611).

Almost surely, 2^69379021 is an apocalyptic number.

69379021 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

69379021 is a deficient number, since it is larger than the sum of its proper divisors (1841867).

69379021 is a wasteful number, since it uses less digits than its factorization.

69379021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11423.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 69379021 is about 8329.4070017019. The cubic root of 69379021 is about 410.9062266948.

The spelling of 69379021 in words is "sixty-nine million, three hundred seventy-nine thousand, twenty-one".