213777465 has 32 divisors (see below), whose sum is σ = 395093376. Its totient is φ = 97551360.

The previous prime is 213777463. The next prime is 213777497. The reversal of 213777465 is 564777312.

It is not a de Polignac number, because 213777465 - 2¹ = 213777463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213777463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35302 + ... + 40911.

It is an arithmetic number, because the mean of its divisors is an integer number (12346668).

Almost surely, 2^213777465 is an apocalyptic number.

It is an amenable number.

213777465 is a deficient number, since it is larger than the sum of its proper divisors (181315911).

213777465 is a wasteful number, since it uses less digits than its factorization.

213777465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76249.

The product of its digits is 246960, while the sum is 42.

The square root of 213777465 is about 14621.1307702243. The cubic root of 213777465 is about 597.9349983224.

The spelling of 213777465 in words is "two hundred thirteen million, seven hundred seventy-seven thousand, four hundred sixty-five".