65172029 has 8 divisors (see below), whose sum is σ = 70275072. Its totient is φ = 60081840.

The previous prime is 65172017. The next prime is 65172043. The reversal of 65172029 is 92027156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65172029 - 2¹² = 65167933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65171986 and 65172004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65172229) 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, 9092 + ... + 14594.

It is an arithmetic number, because the mean of its divisors is an integer number (8784384).

Almost surely, 2^65172029 is an apocalyptic number.

It is an amenable number.

65172029 is a deficient number, since it is larger than the sum of its proper divisors (5103043).

65172029 is a wasteful number, since it uses less digits than its factorization.

65172029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 65172029 is about 8072.9194843006. The cubic root of 65172029 is about 402.4269718208.

The spelling of 65172029 in words is "sixty-five million, one hundred seventy-two thousand, twenty-nine".