69628231 has 4 divisors (see below), whose sum is σ = 69656832. Its totient is φ = 69599632.

The previous prime is 69628187. The next prime is 69628241. The reversal of 69628231 is 13282696.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69628231 - 2¹⁹ = 69103943 is a prime.

It is a super-2 number, since 2×69628231² = 9696181104378722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69628241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10270 + ... + 15643.

It is an arithmetic number, because the mean of its divisors is an integer number (17414208).

Almost surely, 2^69628231 is an apocalyptic number.

69628231 is a deficient number, since it is larger than the sum of its proper divisors (28601).

69628231 is a wasteful number, since it uses less digits than its factorization.

69628231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28600.

The product of its digits is 31104, while the sum is 37.

The square root of 69628231 is about 8344.3532403656. The cubic root of 69628231 is about 411.3976316077.

The spelling of 69628231 in words is "sixty-nine million, six hundred twenty-eight thousand, two hundred thirty-one".