165626947 has 2 divisors, whose sum is σ = 165626948. Its totient is φ = 165626946.

The previous prime is 165626899. The next prime is 165626963. The reversal of 165626947 is 749626561.

165626947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165626947 - 2¹⁹ = 165102659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165626897 and 165626906.

It is not a weakly prime, because it can be changed into another prime (165626977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82813473 + 82813474.

It is an arithmetic number, because the mean of its divisors is an integer number (82813474).

Almost surely, 2^165626947 is an apocalyptic number.

165626947 is a deficient number, since it is larger than the sum of its proper divisors (1).

165626947 is an equidigital number, since it uses as much as digits as its factorization.

165626947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 165626947 is about 12869.6133197544. The cubic root of 165626947 is about 549.1744606750.

The spelling of 165626947 in words is "one hundred sixty-five million, six hundred twenty-six thousand, nine hundred forty-seven".