670551 has 16 divisors (see below), whose sum is σ = 1050624. Its totient is φ = 372384.

The previous prime is 670543. The next prime is 670559. The reversal of 670551 is 155076.

It is an interprime number because it is at equal distance from previous prime (670543) and next prime (670559).

It is not a de Polignac number, because 670551 - 2³ = 670543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670559) 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, 346 + ... + 1208.

It is an arithmetic number, because the mean of its divisors is an integer number (65664).

2⁶⁷⁰⁵⁵¹ is an apocalyptic number.

670551 is a deficient number, since it is larger than the sum of its proper divisors (380073).

670551 is a wasteful number, since it uses less digits than its factorization.

670551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 670551 is about 818.8717848357. The cubic root of 670551 is about 87.5273819065.

It can be divided in two parts, 670 and 551, that added together give a palindrome (1221).

The spelling of 670551 in words is "six hundred seventy thousand, five hundred fifty-one".