165307447 has 8 divisors (see below), whose sum is σ = 166440960. Its totient is φ = 164177880.

The previous prime is 165307399. The next prime is 165307451. The reversal of 165307447 is 744703561.

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 165307447 - 2¹⁵ = 165274679 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 (165307147) 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, 159822 + ... + 160852.

It is an arithmetic number, because the mean of its divisors is an integer number (20805120).

Almost surely, 2^165307447 is an apocalyptic number.

165307447 is a deficient number, since it is larger than the sum of its proper divisors (1133513).

165307447 is a wasteful number, since it uses less digits than its factorization.

165307447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 165307447 is about 12857.1943673571. The cubic root of 165307447 is about 548.8211079789.

The spelling of 165307447 in words is "one hundred sixty-five million, three hundred seven thousand, four hundred forty-seven".