636474000 has 320 divisors, whose sum is σ = 2187574272. Its totient is φ = 158976000.

The previous prime is 636473987. The next prime is 636474019. The reversal of 636474000 is 474636.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10433970 + ... + 10434030.

Almost surely, 2^636474000 is an apocalyptic number.

636474000 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 636474000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1093787136).

636474000 is an abundant number, since it is smaller than the sum of its proper divisors (1551100272).

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

636474000 is a wasteful number, since it uses less digits than its factorization.

636474000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 636474000 is about 25228.4363368006. The cubic root of 636474000 is about 860.1883488674.

The spelling of 636474000 in words is "six hundred thirty-six million, four hundred seventy-four thousand".