667070752 has 48 divisors (see below), whose sum is σ = 1393445592. Its totient is φ = 313262080.

The previous prime is 667070713. The next prime is 667070759. The reversal of 667070752 is 257070766.

It can be written as a sum of positive squares in 4 ways, for example, as 641304976 + 25765776 = 25324^2 + 5076^2 .

It is not an unprimeable number, because it can be changed into a prime (667070759) 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, 347748 + ... + 349660.

Almost surely, 2^667070752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667070752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696722796).

667070752 is an abundant number, since it is smaller than the sum of its proper divisors (726374840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667070752 is a wasteful number, since it uses less digits than its factorization.

667070752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581 (or 2573 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 667070752 is about 25827.7128681577. The cubic root of 667070752 is about 873.7569296143.

The spelling of 667070752 in words is "six hundred sixty-seven million, seventy thousand, seven hundred fifty-two".