213098761 has 8 divisors (see below), whose sum is σ = 217810944. Its totient is φ = 208434240.

The previous prime is 213098729. The next prime is 213098773. The reversal of 213098761 is 167890312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213098761 - 2⁵ = 213098729 is a prime.

It is a super-2 number, since 2×213098761² = 90822163879470242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213098761.

It is not an unprimeable number, because it can be changed into a prime (213098261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2800 + ... + 20833.

It is an arithmetic number, because the mean of its divisors is an integer number (27226368).

Almost surely, 2^213098761 is an apocalyptic number.

It is an amenable number.

213098761 is a deficient number, since it is larger than the sum of its proper divisors (4712183).

213098761 is a wasteful number, since it uses less digits than its factorization.

213098761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23831.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 213098761 is about 14597.9026233223. The cubic root of 213098761 is about 597.3015497298.

The spelling of 213098761 in words is "two hundred thirteen million, ninety-eight thousand, seven hundred sixty-one".