621601417 has 8 divisors (see below), whose sum is σ = 624047112. Its totient is φ = 619161600.

The previous prime is 621601391. The next prime is 621601423. The reversal of 621601417 is 714106126.

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 621554761 = 216^2 + 24931^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621601417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621601117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356167 + ... + 357907.

It is an arithmetic number, because the mean of its divisors is an integer number (78005889).

Almost surely, 2^621601417 is an apocalyptic number.

It is an amenable number.

621601417 is a deficient number, since it is larger than the sum of its proper divisors (2445695).

621601417 is a wasteful number, since it uses less digits than its factorization.

621601417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 621601417 is about 24931.9356849804. The cubic root of 621601417 is about 853.4354237632.

The spelling of 621601417 in words is "six hundred twenty-one million, six hundred one thousand, four hundred seventeen".