40647001 has 4 divisors (see below), whose sum is σ = 41161600. Its totient is φ = 40132404.

The previous prime is 40646987. The next prime is 40647059. The reversal of 40647001 is 10074604.

40647001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40647001 is a prime.

It is the 6376-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40647071) by changing a digit.

It is a nontrivial repunit in base 6375.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257181 + ... + 257338.

It is an arithmetic number, because the mean of its divisors is an integer number (10290400).

Almost surely, 2^40647001 is an apocalyptic number.

It is an amenable number.

40647001 is a deficient number, since it is larger than the sum of its proper divisors (514599).

40647001 is an equidigital number, since it uses as much as digits as its factorization.

40647001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514598.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 40647001 is about 6375.5000588189. The cubic root of 40647001 is about 343.8292627798.

The spelling of 40647001 in words is "forty million, six hundred forty-seven thousand, one".