3620378217 has 4 divisors (see below), whose sum is σ = 4827170960. Its totient is φ = 2413585476.

The previous prime is 3620378197. The next prime is 3620378231. The reversal of 3620378217 is 7128730263.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7128730263 = 3 ⋅2376243421.

It is a de Polignac number, because none of the positive numbers 2^k-3620378217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3620378287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603396367 + ... + 603396372.

It is an arithmetic number, because the mean of its divisors is an integer number (1206792740).

Almost surely, 2^3620378217 is an apocalyptic number.

It is an amenable number.

3620378217 is a deficient number, since it is larger than the sum of its proper divisors (1206792743).

3620378217 is a wasteful number, since it uses less digits than its factorization.

3620378217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206792742.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 3620378217 is about 60169.5788334936. The cubic root of 3620378217 is about 1535.5052808587.

The spelling of 3620378217 in words is "three billion, six hundred twenty million, three hundred seventy-eight thousand, two hundred seventeen".