35640009 has 12 divisors (see below), whose sum is σ = 52452036. Its totient is φ = 23311392.

The previous prime is 35640001. The next prime is 35640019. The reversal of 35640009 is 90004653.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22353984 + 13286025 = 4728^2 + 3645^2 .

It is not a de Polignac number, because 35640009 - 2³ = 35640001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (35640001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36882 + ... + 37835.

It is an arithmetic number, because the mean of its divisors is an integer number (4371003).

Almost surely, 2^35640009 is an apocalyptic number.

It is an amenable number.

35640009 is a deficient number, since it is larger than the sum of its proper divisors (16812027).

35640009 is a wasteful number, since it uses less digits than its factorization.

35640009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74776 (or 74773 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 35640009 is about 5969.9253764180. The cubic root of 35640009 is about 329.0884208470.

The spelling of 35640009 in words is "thirty-five million, six hundred forty thousand, nine".