667248488 has 8 divisors (see below), whose sum is σ = 1251090930. Its totient is φ = 333624240.

The previous prime is 667248481. The next prime is 667248497. The reversal of 667248488 is 884842766.

It can be written as a sum of positive squares in only one way, i.e., 509946724 + 157301764 = 22582^2 + 12542^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×667248488² = 890441089476572288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667248481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41703023 + ... + 41703038.

Almost surely, 2^667248488 is an apocalyptic number.

It is an amenable number.

667248488 is a deficient number, since it is larger than the sum of its proper divisors (583842442).

667248488 is a wasteful number, since it uses less digits than its factorization.

667248488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83406067 (or 83406063 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 53.

The square root of 667248488 is about 25831.1534392098. The cubic root of 667248488 is about 873.8345247173.

The spelling of 667248488 in words is "six hundred sixty-seven million, two hundred forty-eight thousand, four hundred eighty-eight".