670455 has 24 divisors (see below), whose sum is σ = 1190592. Its totient is φ = 348864.

The previous prime is 670447. The next prime is 670457. The reversal of 670455 is 554076.

It is not a de Polignac number, because 670455 - 2³ = 670447 is a prime.

It is a super-3 number, since 3×670455³ = 904128494143339125, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1957 + ... + 2273.

It is an arithmetic number, because the mean of its divisors is an integer number (49608).

2⁶⁷⁰⁴⁵⁵ is an apocalyptic number.

670455 is a deficient number, since it is larger than the sum of its proper divisors (520137).

670455 is a wasteful number, since it uses less digits than its factorization.

670455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 670455 is about 818.8131655024. The cubic root of 670455 is about 87.5232047300.

The spelling of 670455 in words is "six hundred seventy thousand, four hundred fifty-five".