423670645 has 32 divisors (see below), whose sum is σ = 555540480. Its totient is φ = 308992320.

The previous prime is 423670633. The next prime is 423670679. The reversal of 423670645 is 546076324.

It is not a de Polignac number, because 423670645 - 2⁹ = 423670133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 774262 + ... + 774808.

It is an arithmetic number, because the mean of its divisors is an integer number (17360640).

Almost surely, 2^423670645 is an apocalyptic number.

It is an amenable number.

423670645 is a deficient number, since it is larger than the sum of its proper divisors (131869835).

423670645 is a wasteful number, since it uses less digits than its factorization.

423670645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 423670645 is about 20583.2612819252. The cubic root of 423670645 is about 751.0625797806.

The spelling of 423670645 in words is "four hundred twenty-three million, six hundred seventy thousand, six hundred forty-five".