40615 has 4 divisors (see below), whose sum is σ = 48744. Its totient is φ = 32488.

The previous prime is 40609. The next prime is 40627. The reversal of 40615 is 51604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40615 - 2⁵ = 40583 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 3 ways as a sum of consecutive naturals, for example, 4057 + ... + 4066.

It is an arithmetic number, because the mean of its divisors is an integer number (12186).

2⁴⁰⁶¹⁵ is an apocalyptic number.

40615 is a deficient number, since it is larger than the sum of its proper divisors (8129).

40615 is an equidigital number, since it uses as much as digits as its factorization.

40615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8128.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 40615 is about 201.5316352338. The cubic root of 40615 is about 34.3739007913.

The spelling of 40615 in words is "forty thousand, six hundred fifteen".