65849172 has 24 divisors (see below), whose sum is σ = 155172192. Its totient is φ = 21732000.

The previous prime is 65849171. The next prime is 65849197. The reversal of 65849172 is 27194856.

It is a super-2 number, since 2×65849172² = 8672226906171168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65849171) 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, 25954 + ... + 28377.

It is an arithmetic number, because the mean of its divisors is an integer number (6465508).

Almost surely, 2^65849172 is an apocalyptic number.

It is an amenable number.

65849172 is an abundant number, since it is smaller than the sum of its proper divisors (89323020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65849172 is a wasteful number, since it uses less digits than its factorization.

65849172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54439 (or 54437 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 65849172 is about 8114.7502734219. The cubic root of 65849172 is about 403.8159227410.

The spelling of 65849172 in words is "sixty-five million, eight hundred forty-nine thousand, one hundred seventy-two".