670766461 has 4 divisors (see below), whose sum is σ = 670905952. Its totient is φ = 670626972.

The previous prime is 670766441. The next prime is 670766477. The reversal of 670766461 is 164667076.

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 not a de Polignac number, because 670766461 - 2⁷ = 670766333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670766401) 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, 62265 + ... + 72238.

It is an arithmetic number, because the mean of its divisors is an integer number (167726488).

Almost surely, 2^670766461 is an apocalyptic number.

It is an amenable number.

670766461 is a deficient number, since it is larger than the sum of its proper divisors (139491).

670766461 is a wasteful number, since it uses less digits than its factorization.

670766461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139490.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 670766461 is about 25899.1594651255. The cubic root of 670766461 is about 875.3675564925.

It can be divided in two parts, 67076 and 6461, that added together give a palindrome (73537).

The spelling of 670766461 in words is "six hundred seventy million, seven hundred sixty-six thousand, four hundred sixty-one".