402068651 has 4 divisors (see below), whose sum is σ = 403563600. Its totient is φ = 400573704.

The previous prime is 402068647. The next prime is 402068663. The reversal of 402068651 is 156860204.

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 402068651 - 2² = 402068647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402068621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747071 + ... + 747608.

It is an arithmetic number, because the mean of its divisors is an integer number (100890900).

Almost surely, 2^402068651 is an apocalyptic number.

402068651 is a deficient number, since it is larger than the sum of its proper divisors (1494949).

402068651 is a wasteful number, since it uses less digits than its factorization.

402068651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494948.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 402068651 is about 20051.6495830144. The cubic root of 402068651 is about 738.0742789689.

The spelling of 402068651 in words is "four hundred two million, sixty-eight thousand, six hundred fifty-one".