670497554 has 12 divisors (see below), whose sum is σ = 1019999646. Its totient is φ = 330502032.

The previous prime is 670497551. The next prime is 670497589. The reversal of 670497554 is 455794076.

It can be written as a sum of positive squares in only one way, i.e., 555686329 + 114811225 = 23573^2 + 10715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 670497499 and 670497508.

It is not an unprimeable number, because it can be changed into a prime (670497551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 311807 + ... + 313949.

Almost surely, 2^670497554 is an apocalyptic number.

670497554 is a deficient number, since it is larger than the sum of its proper divisors (349502092).

670497554 is an frugal number, since it uses more digits than its factorization.

670497554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4361 (or 2218 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 47.

The square root of 670497554 is about 25893.9675214132. The cubic root of 670497554 is about 875.2505639970.

The spelling of 670497554 in words is "six hundred seventy million, four hundred ninety-seven thousand, five hundred fifty-four".