69601021 has 6 divisors (see below), whose sum is σ = 80964510. Its totient is φ = 59657976.

The previous prime is 69601001. The next prime is 69601027. The reversal of 69601021 is 12010696.

It can be written as a sum of positive squares in only one way, i.e., 67076100 + 2524921 = 8190^2 + 1589^2 .

It is not a de Polignac number, because 69601021 - 2⁵ = 69600989 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 (69601027) 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 5 ways as a sum of consecutive naturals, for example, 710166 + ... + 710263.

It is an arithmetic number, because the mean of its divisors is an integer number (13494085).

Almost surely, 2^69601021 is an apocalyptic number.

It is an amenable number.

69601021 is a deficient number, since it is larger than the sum of its proper divisors (11363489).

69601021 is a wasteful number, since it uses less digits than its factorization.

69601021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420443 (or 1420436 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 69601021 is about 8342.7226371251. The cubic root of 69601021 is about 411.3440346308.

The spelling of 69601021 in words is "sixty-nine million, six hundred one thousand, twenty-one".