675065021400 has 384 divisors, whose sum is σ = 2898982310400. Its totient is φ = 140273164800.

The previous prime is 675065021333. The next prime is 675065021417. The reversal of 675065021400 is 4120560576.

It is a happy number.

675065021400 is a `hidden beast` number, since 6 + 7 + 5 + 0 + 6 + 502 + 140 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 395967 + ... + 1227566.

It is an arithmetic number, because the mean of its divisors is an integer number (7549433100).

Almost surely, 2^675065021400 is an apocalyptic number.

675065021400 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 675065021400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1449491155200).

675065021400 is an abundant number, since it is smaller than the sum of its proper divisors (2223917289000).

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

675065021400 is a wasteful number, since it uses less digits than its factorization.

675065021400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623576 (or 1623561 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

Adding to 675065021400 its reverse (4120560576), we get a palindrome (679185581976).

The spelling of 675065021400 in words is "six hundred seventy-five billion, sixty-five million, twenty-one thousand, four hundred".