7820630401 has 4 divisors (see below), whose sum is σ = 7826984704. Its totient is φ = 7814276100.

The previous prime is 7820630387. The next prime is 7820630449. The reversal of 7820630401 is 1040360287.

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: 1040360287 = 571 ⋅1821997.

It is a cyclic number.

It is not a de Polignac number, because 7820630401 - 2⁷ = 7820630273 is a prime.

It is a super-2 number, since 2×7820630401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7820630491) 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, 3175305 + ... + 3177766.

It is an arithmetic number, because the mean of its divisors is an integer number (1956746176).

Almost surely, 2^7820630401 is an apocalyptic number.

It is an amenable number.

7820630401 is a deficient number, since it is larger than the sum of its proper divisors (6354303).

7820630401 is a wasteful number, since it uses less digits than its factorization.

7820630401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6354302.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 7820630401 is about 88434.3281819905. The cubic root of 7820630401 is about 1984.9394073635.

Adding to 7820630401 its reverse (1040360287), we get a palindrome (8860990688).

The spelling of 7820630401 in words is "seven billion, eight hundred twenty million, six hundred thirty thousand, four hundred one".