213968475 has 72 divisors (see below), whose sum is σ = 444228512. Its totient is φ = 96422400.

The previous prime is 213968441. The next prime is 213968483. The reversal of 213968475 is 574869312.

213968475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213968475 - 2⁶ = 213968411 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 213968475.

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, 114045 + ... + 115905.

Almost surely, 2^213968475 is an apocalyptic number.

213968475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

213968475 is an abundant number, since it is smaller than the sum of its proper divisors (230260037).

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

213968475 is a wasteful number, since it uses less digits than its factorization.

213968475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957 (or 1949 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 213968475 is about 14627.6612963249. The cubic root of 213968475 is about 598.1130301290.

The spelling of 213968475 in words is "two hundred thirteen million, nine hundred sixty-eight thousand, four hundred seventy-five".