670743936 has 128 divisors (see below), whose sum is σ = 1988632800. Its totient is φ = 222566400.

The previous prime is 670743911. The next prime is 670743937. The reversal of 670743936 is 639347076.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 670743891 and 670743900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670743937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1454746 + ... + 1455206.

Almost surely, 2^670743936 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 670743936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994316400).

670743936 is an abundant number, since it is smaller than the sum of its proper divisors (1317888864).

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

670743936 is a wasteful number, since it uses less digits than its factorization.

670743936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The square root of 670743936 is about 25898.7246018023. The cubic root of 670743936 is about 875.3577578139.

The spelling of 670743936 in words is "six hundred seventy million, seven hundred forty-three thousand, nine hundred thirty-six".