65239000 has 32 divisors (see below), whose sum is σ = 152661600. Its totient is φ = 26095200.

The previous prime is 65238997. The next prime is 65239003. The reversal of 65239000 is 93256.

It is an interprime number because it is at equal distance from previous prime (65238997) and next prime (65239003).

It is a super-2 number, since 2×65239000² = 8512254242000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65239003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31620 + ... + 33619.

It is an arithmetic number, because the mean of its divisors is an integer number (4770675).

Almost surely, 2^65239000 is an apocalyptic number.

It is an amenable number.

65239000 is an abundant number, since it is smaller than the sum of its proper divisors (87422600).

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

65239000 is a wasteful number, since it uses less digits than its factorization.

65239000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65260 (or 65246 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 65239000 is about 8077.0662990965. The cubic root of 65239000 is about 402.5647697422.

The spelling of 65239000 in words is "sixty-five million, two hundred thirty-nine thousand".