47640965 has 8 divisors (see below), whose sum is σ = 57276960. Its totient is φ = 38040912.

The previous prime is 47640949. The next prime is 47640977. The reversal of 47640965 is 56904674.

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 47640965 - 2⁴ = 47640949 is a prime.

It is a super-2 number, since 2×47640965² = 4539323092262450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5975 + ... + 11444.

It is an arithmetic number, because the mean of its divisors is an integer number (7159620).

Almost surely, 2^47640965 is an apocalyptic number.

It is an amenable number.

47640965 is a deficient number, since it is larger than the sum of its proper divisors (9635995).

47640965 is a wasteful number, since it uses less digits than its factorization.

47640965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17971.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 47640965 is about 6902.2434758562. The cubic root of 47640965 is about 362.5157250412.

The spelling of 47640965 in words is "forty-seven million, six hundred forty thousand, nine hundred sixty-five".