65424909 has 8 divisors (see below), whose sum is σ = 95163552. Its totient is φ = 39651440.

The previous prime is 65424881. The next prime is 65424913. The reversal of 65424909 is 90942456.

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 65424909 - 2⁷ = 65424781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65423909) 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, 991254 + ... + 991319.

It is an arithmetic number, because the mean of its divisors is an integer number (11895444).

Almost surely, 2^65424909 is an apocalyptic number.

It is an amenable number.

65424909 is a deficient number, since it is larger than the sum of its proper divisors (29738643).

65424909 is a wasteful number, since it uses less digits than its factorization.

65424909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982587.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 65424909 is about 8088.5665602751. The cubic root of 65424909 is about 402.9467980595.

The spelling of 65424909 in words is "sixty-five million, four hundred twenty-four thousand, nine hundred nine".