402611 has 8 divisors (see below), whose sum is σ = 465264. Its totient is φ = 344320.

The previous prime is 402601. The next prime is 402613. The reversal of 402611 is 116204.

402611 = 5² + 6² + ... + 106².

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 402611 - 2¹⁰ = 401587 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402611.

It is not an unprimeable number, because it can be changed into a prime (402613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890 + ... + 1263.

It is an arithmetic number, because the mean of its divisors is an integer number (58158).

2⁴⁰²⁶¹¹ is an apocalyptic number.

402611 is a deficient number, since it is larger than the sum of its proper divisors (62653).

402611 is a wasteful number, since it uses less digits than its factorization.

402611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 402611 is about 634.5163512472. The cubic root of 402611 is about 73.8405991804.

Adding to 402611 its reverse (116204), we get a palindrome (518815).

The spelling of 402611 in words is "four hundred two thousand, six hundred eleven".