667062547 has 4 divisors (see below), whose sum is σ = 672315136. Its totient is φ = 661809960.

The previous prime is 667062533. The next prime is 667062559. The reversal of 667062547 is 745260766.

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-667062547 is a prime.

It is a super-2 number, since 2×667062547² = 889944883220254418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667062947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2626104 + ... + 2626357.

It is an arithmetic number, because the mean of its divisors is an integer number (168078784).

Almost surely, 2^667062547 is an apocalyptic number.

667062547 is a deficient number, since it is larger than the sum of its proper divisors (5252589).

667062547 is a wasteful number, since it uses less digits than its factorization.

667062547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252588.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 667062547 is about 25827.5540266592. The cubic root of 667062547 is about 873.7533471832.

The spelling of 667062547 in words is "six hundred sixty-seven million, sixty-two thousand, five hundred forty-seven".