670284761 has 4 divisors (see below), whose sum is σ = 670752000. Its totient is φ = 669817524.

The previous prime is 670284749. The next prime is 670284787. The reversal of 670284761 is 167482076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670284761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670284161) 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, 231461 + ... + 234338.

It is an arithmetic number, because the mean of its divisors is an integer number (167688000).

Almost surely, 2^670284761 is an apocalyptic number.

It is an amenable number.

670284761 is a deficient number, since it is larger than the sum of its proper divisors (467239).

670284761 is a wasteful number, since it uses less digits than its factorization.

670284761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467238.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 670284761 is about 25889.8582653517. The cubic root of 670284761 is about 875.1579626652.

The spelling of 670284761 in words is "six hundred seventy million, two hundred eighty-four thousand, seven hundred sixty-one".