214640654 has 4 divisors (see below), whose sum is σ = 321960984. Its totient is φ = 107320326.

The previous prime is 214640651. The next prime is 214640743. The reversal of 214640654 is 456046412.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×214640654² = 92141220699095432, which contains 22 as substring.

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 214640654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214640651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53660162 + ... + 53660165.

It is an arithmetic number, because the mean of its divisors is an integer number (80490246).

Almost surely, 2^214640654 is an apocalyptic number.

214640654 is a deficient number, since it is larger than the sum of its proper divisors (107320330).

214640654 is a wasteful number, since it uses less digits than its factorization.

214640654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107320329.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 214640654 is about 14650.6195773421. The cubic root of 214640654 is about 598.7386966775.

The spelling of 214640654 in words is "two hundred fourteen million, six hundred forty thousand, six hundred fifty-four".