396651 has 8 divisors (see below), whose sum is σ = 534160. Its totient is φ = 261792.

The previous prime is 396647. The next prime is 396667. The reversal of 396651 is 156693.

It is a happy number.

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

It is not a de Polignac number, because 396651 - 2² = 396647 is a prime.

It is a Duffinian number.

396651 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396601) 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, 280 + ... + 933.

It is an arithmetic number, because the mean of its divisors is an integer number (66770).

2³⁹⁶⁶⁵¹ is an apocalyptic number.

396651 is a deficient number, since it is larger than the sum of its proper divisors (137509).

396651 is a wasteful number, since it uses less digits than its factorization.

396651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325.

The product of its digits is 4860, while the sum is 30.

The square root of 396651 is about 629.8023499480. The cubic root of 396651 is about 73.4744230503.

The spelling of 396651 in words is "three hundred ninety-six thousand, six hundred fifty-one".