670921269 has 16 divisors (see below), whose sum is σ = 955880640. Its totient is φ = 417104640.

The previous prime is 670921267. The next prime is 670921283. The reversal of 670921269 is 962129076.

It is not a de Polignac number, because 670921269 - 2¹ = 670921267 is a prime.

It is a super-2 number, since 2×670921269² = 900270698393140722, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 670921269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670921261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54787 + ... + 65904.

It is an arithmetic number, because the mean of its divisors is an integer number (59742540).

Almost surely, 2^670921269 is an apocalyptic number.

It is an amenable number.

670921269 is a deficient number, since it is larger than the sum of its proper divisors (284959371).

670921269 is a wasteful number, since it uses less digits than its factorization.

670921269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120820.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 670921269 is about 25902.1479611248. The cubic root of 670921269 is about 875.4348941252.

The spelling of 670921269 in words is "six hundred seventy million, nine hundred twenty-one thousand, two hundred sixty-nine".