214648978 has 4 divisors (see below), whose sum is σ = 321973470. Its totient is φ = 107324488.

The previous prime is 214648969. The next prime is 214648999. The reversal of 214648978 is 879846412.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 133702969 + 80946009 = 11563^2 + 8997^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53662243 + ... + 53662246.

Almost surely, 2^214648978 is an apocalyptic number.

214648978 is a deficient number, since it is larger than the sum of its proper divisors (107324492).

214648978 is a wasteful number, since it uses less digits than its factorization.

214648978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107324491.

The product of its digits is 774144, while the sum is 49.

The square root of 214648978 is about 14650.9036581366. The cubic root of 214648978 is about 598.7464364919.

The spelling of 214648978 in words is "two hundred fourteen million, six hundred forty-eight thousand, nine hundred seventy-eight".