402606623 has 8 divisors (see below), whose sum is σ = 419672880. Its totient is φ = 385752640.

The previous prime is 402606587. The next prime is 402606629. The reversal of 402606623 is 326606204.

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 402606623 - 2¹⁸ = 402344479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402606629) 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, 49190 + ... + 56787.

It is an arithmetic number, because the mean of its divisors is an integer number (52459110).

Almost surely, 2^402606623 is an apocalyptic number.

402606623 is a deficient number, since it is larger than the sum of its proper divisors (17066257).

402606623 is a wasteful number, since it uses less digits than its factorization.

402606623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106137.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 402606623 is about 20065.0597557047. The cubic root of 402606623 is about 738.4033159256.

The spelling of 402606623 in words is "four hundred two million, six hundred six thousand, six hundred twenty-three".