674531000 has 256 divisors, whose sum is σ = 1910563200. Its totient is φ = 219648000.

The previous prime is 674530973. The next prime is 674531003. The reversal of 674531000 is 135476.

It is a super-2 number, since 2×674531000² = 909984139922000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674531003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7578956 + ... + 7579044.

Almost surely, 2^674531000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674531000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955281600).

674531000 is an abundant number, since it is smaller than the sum of its proper divisors (1236032200).

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

674531000 is a wasteful number, since it uses less digits than its factorization.

674531000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 674531000 is about 25971.7346359461. The cubic root of 674531000 is about 877.0021093073.

Adding to 674531000 its reverse (135476), we get a palindrome (674666476).

The spelling of 674531000 in words is "six hundred seventy-four million, five hundred thirty-one thousand".