667040734 has 16 divisors (see below), whose sum is σ = 1024751376. Its totient is φ = 325540800.

The previous prime is 667040729. The next prime is 667040753. The reversal of 667040734 is 437040766.

It is a junction number, because it is equal to n+sod(n) for n = 667040693 and 667040702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4887 + ... + 36850.

It is an arithmetic number, because the mean of its divisors is an integer number (64046961).

Almost surely, 2^667040734 is an apocalyptic number.

667040734 is a deficient number, since it is larger than the sum of its proper divisors (357710642).

667040734 is a wasteful number, since it uses less digits than its factorization.

667040734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41931.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 667040734 is about 25827.1317416394. The cubic root of 667040734 is about 873.7438231440.

The spelling of 667040734 in words is "six hundred sixty-seven million, forty thousand, seven hundred thirty-four".