675449280 has 560 divisors, whose sum is σ = 2761634304. Its totient is φ = 155105280.

The previous prime is 675449261. The next prime is 675449339. The reversal of 675449280 is 82944576.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6557709 + ... + 6557811.

Almost surely, 2^675449280 is an apocalyptic number.

675449280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 675449280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1380817152).

675449280 is an abundant number, since it is smaller than the sum of its proper divisors (2086185024).

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

675449280 is a wasteful number, since it uses less digits than its factorization.

675449280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 675449280 is about 25989.4070728826. The cubic root of 675449280 is about 877.3999009202.

The spelling of 675449280 in words is "six hundred seventy-five million, four hundred forty-nine thousand, two hundred eighty".