213377805 has 24 divisors (see below), whose sum is σ = 381788160. Its totient is φ = 110129760.

The previous prime is 213377803. The next prime is 213377819. The reversal of 213377805 is 508773312.

It is not a de Polignac number, because 213377805 - 2¹ = 213377803 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 213377805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213377803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75085 + ... + 77874.

It is an arithmetic number, because the mean of its divisors is an integer number (15907840).

Almost surely, 2^213377805 is an apocalyptic number.

It is an amenable number.

213377805 is a deficient number, since it is larger than the sum of its proper divisors (168410355).

213377805 is a wasteful number, since it uses less digits than its factorization.

213377805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153001 (or 152998 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 213377805 is about 14607.4571709110. The cubic root of 213377805 is about 597.5621498933.

The spelling of 213377805 in words is "two hundred thirteen million, three hundred seventy-seven thousand, eight hundred five".