670267567 has 4 divisors (see below), whose sum is σ = 674142120. Its totient is φ = 666393016.

The previous prime is 670267561. The next prime is 670267571. The reversal of 670267567 is 765762076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670267567 is a prime.

It is a super-2 number, since 2×670267567² = 898517222744198978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670267561) 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, 1937017 + ... + 1937362.

It is an arithmetic number, because the mean of its divisors is an integer number (168535530).

Almost surely, 2^670267567 is an apocalyptic number.

670267567 is a deficient number, since it is larger than the sum of its proper divisors (3874553).

670267567 is a wasteful number, since it uses less digits than its factorization.

670267567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874552.

The product of its (nonzero) digits is 740880, while the sum is 46.

The square root of 670267567 is about 25889.5262026944. The cubic root of 670267567 is about 875.1504794801.

The spelling of 670267567 in words is "six hundred seventy million, two hundred sixty-seven thousand, five hundred sixty-seven".