670148550 has 144 divisors (see below), whose sum is σ = 1876754880. Its totient is φ = 171299520.

The previous prime is 670148537. The next prime is 670148561. The reversal of 670148550 is 55841076.

670148550 is a `hidden beast` number, since 67 + 0 + 1 + 48 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1141357 + ... + 1141943.

It is an arithmetic number, because the mean of its divisors is an integer number (13033020).

Almost surely, 2^670148550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670148550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (938377440).

670148550 is an abundant number, since it is smaller than the sum of its proper divisors (1206606330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670148550 is a wasteful number, since it uses less digits than its factorization.

670148550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 670148550 is about 25887.2275456450. The cubic root of 670148550 is about 875.0986773067.

The spelling of 670148550 in words is "six hundred seventy million, one hundred forty-eight thousand, five hundred fifty".