670747 has 16 divisors (see below), whose sum is σ = 866304. Its totient is φ = 504000.

The previous prime is 670739. The next prime is 670763. The reversal of 670747 is 747076.

670747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 670747 - 2³ = 670739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2247 + ... + 2527.

It is an arithmetic number, because the mean of its divisors is an integer number (54144).

2⁶⁷⁰⁷⁴⁷ is an apocalyptic number.

670747 is a deficient number, since it is larger than the sum of its proper divisors (195557).

670747 is a wasteful number, since it uses less digits than its factorization.

670747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 670747 is about 818.9914529469. The cubic root of 670747 is about 87.5359090708.

It can be divided in two parts, 67074 and 7, that added together give a square (67081 = 259²).

The spelling of 670747 in words is "six hundred seventy thousand, seven hundred forty-seven".