667070551 has 8 divisors (see below), whose sum is σ = 762896384. Its totient is φ = 571377240.

The previous prime is 667070543. The next prime is 667070609. The reversal of 667070551 is 155070766.

667070551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 667070551 - 2³ = 667070543 is a prime.

It is a super-2 number, since 2×667070551² = 889966240022887202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667070551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667070351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22095 + ... + 42688.

It is an arithmetic number, because the mean of its divisors is an integer number (95362048).

Almost surely, 2^667070551 is an apocalyptic number.

667070551 is a deficient number, since it is larger than the sum of its proper divisors (95825833).

667070551 is a wasteful number, since it uses less digits than its factorization.

667070551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66261.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 667070551 is about 25827.7089769883. The cubic root of 667070551 is about 873.7568418549.

The spelling of 667070551 in words is "six hundred sixty-seven million, seventy thousand, five hundred fifty-one".