69520823 has 2 divisors, whose sum is σ = 69520824. Its totient is φ = 69520822.

The previous prime is 69520807. The next prime is 69520831. The reversal of 69520823 is 32802596.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69520823 - 2⁴ = 69520807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69520873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34760411 + 34760412.

It is an arithmetic number, because the mean of its divisors is an integer number (34760412).

Almost surely, 2^69520823 is an apocalyptic number.

69520823 is a deficient number, since it is larger than the sum of its proper divisors (1).

69520823 is an equidigital number, since it uses as much as digits as its factorization.

69520823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 69520823 is about 8337.9147872834. The cubic root of 69520823 is about 411.1859830818.

The spelling of 69520823 in words is "sixty-nine million, five hundred twenty thousand, eight hundred twenty-three".