670402 has 8 divisors (see below), whose sum is σ = 1020816. Its totient is φ = 330132.

The previous prime is 670399. The next prime is 670409. The reversal of 670402 is 204076.

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

It is a self number, because there is not a number n which added to its sum of digits gives 670402.

It is not an unprimeable number, because it can be changed into a prime (670409) 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, 2368 + ... + 2635.

It is an arithmetic number, because the mean of its divisors is an integer number (127602).

2⁶⁷⁰⁴⁰² is an apocalyptic number.

670402 is a deficient number, since it is larger than the sum of its proper divisors (350414).

670402 is a wasteful number, since it uses less digits than its factorization.

670402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5072.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 670402 is about 818.7808009474. The cubic root of 670402 is about 87.5208984096.

Adding to 670402 its reverse (204076), we get a palindrome (874478).

The spelling of 670402 in words is "six hundred seventy thousand, four hundred two".