213948658 has 16 divisors (see below), whose sum is σ = 400112064. Its totient is φ = 83356560.

The previous prime is 213948649. The next prime is 213948667. The reversal of 213948658 is 856849312.

It is an interprime number because it is at equal distance from previous prime (213948649) and next prime (213948667).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694485 + ... + 694792.

It is an arithmetic number, because the mean of its divisors is an integer number (25007004).

Almost surely, 2^213948658 is an apocalyptic number.

213948658 is a deficient number, since it is larger than the sum of its proper divisors (186163406).

213948658 is a wasteful number, since it uses less digits than its factorization.

213948658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389297.

The product of its digits is 414720, while the sum is 46.

The square root of 213948658 is about 14626.9838996288. The cubic root of 213948658 is about 598.0945645243.

The spelling of 213948658 in words is "two hundred thirteen million, nine hundred forty-eight thousand, six hundred fifty-eight".