40230665 has 8 divisors (see below), whose sum is σ = 48938568. Its totient is φ = 31743360.

The previous prime is 40230647. The next prime is 40230683. The reversal of 40230665 is 56603204.

It is an interprime number because it is at equal distance from previous prime (40230647) and next prime (40230683).

It can be written as a sum of positive squares in 4 ways, for example, as 942841 + 39287824 = 971^2 + 6268^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40230665 - 2⁶ = 40230601 is a prime.

It is a Duffinian number.

It is a Curzon 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, 54746 + ... + 55475.

It is an arithmetic number, because the mean of its divisors is an integer number (6117321).

Almost surely, 2^40230665 is an apocalyptic number.

It is an amenable number.

40230665 is a deficient number, since it is larger than the sum of its proper divisors (8707903).

40230665 is a wasteful number, since it uses less digits than its factorization.

40230665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110299.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 40230665 is about 6342.7647757110. The cubic root of 40230665 is about 342.6513157382.

Adding to 40230665 its reverse (56603204), we get a palindrome (96833869).

The spelling of 40230665 in words is "forty million, two hundred thirty thousand, six hundred sixty-five".