40246645 has 8 divisors (see below), whose sum is σ = 48724056. Its totient is φ = 31911936.

The previous prime is 40246631. The next prime is 40246691. The reversal of 40246645 is 54664204.

It can be written as a sum of positive squares in 4 ways, for example, as 531441 + 39715204 = 729^2 + 6302^2 .

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 40246645 - 2⁷ = 40246517 is a prime.

It is a Duffinian 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, 35052 + ... + 36181.

It is an arithmetic number, because the mean of its divisors is an integer number (6090507).

Almost surely, 2^40246645 is an apocalyptic number.

It is an amenable number.

40246645 is a deficient number, since it is larger than the sum of its proper divisors (8477411).

40246645 is a wasteful number, since it uses less digits than its factorization.

40246645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71351.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 40246645 is about 6344.0243536733. The cubic root of 40246645 is about 342.6966778453.

The spelling of 40246645 in words is "forty million, two hundred forty-six thousand, six hundred forty-five".