670273521 has 8 divisors (see below), whose sum is σ = 932554560. Its totient is φ = 427420752.

The previous prime is 670273519. The next prime is 670273523. The reversal of 670273521 is 125372076.

It is an interprime number because it is at equal distance from previous prime (670273519) and next prime (670273523).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 670273521 - 2¹ = 670273519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (670273523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4856986 + ... + 4857123.

It is an arithmetic number, because the mean of its divisors is an integer number (116569320).

Almost surely, 2^670273521 is an apocalyptic number.

It is an amenable number.

670273521 is a deficient number, since it is larger than the sum of its proper divisors (262281039).

670273521 is a wasteful number, since it uses less digits than its factorization.

670273521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9714135.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 670273521 is about 25889.6411910246. The cubic root of 670273521 is about 875.1530707988.

The spelling of 670273521 in words is "six hundred seventy million, two hundred seventy-three thousand, five hundred twenty-one".