620954217 has 24 divisors (see below), whose sum is σ = 966912128. Its totient is φ = 381736800.

The previous prime is 620954203. The next prime is 620954233. The reversal of 620954217 is 712459026.

620954217 is a `hidden beast` number, since 620 + 9 + 5 + 4 + 21 + 7 = 666.

It is not a de Polignac number, because 620954217 - 2⁸ = 620953961 is a prime.

It is a super-2 number, since 2×620954217² = 771168279220166178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (620954237) 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, 148992 + ... + 153102.

Almost surely, 2^620954217 is an apocalyptic number.

It is an amenable number.

620954217 is a deficient number, since it is larger than the sum of its proper divisors (345957911).

620954217 is a wasteful number, since it uses less digits than its factorization.

620954217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421 (or 5418 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 620954217 is about 24918.9529675707. The cubic root of 620954217 is about 853.1391271339.

The spelling of 620954217 in words is "six hundred twenty million, nine hundred fifty-four thousand, two hundred seventeen".