7631620 has 24 divisors (see below), whose sum is σ = 16461144. Its totient is φ = 2969856.

The previous prime is 7631609. The next prime is 7631633. The reversal of 7631620 is 261367.

It can be written as a sum of positive squares in 4 ways, for example, as 1784896 + 5846724 = 1336^2 + 2418^2 .

It is a super-3 number, since 3×7631620³ (a number of 22 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4417 + ... + 5896.

It is an arithmetic number, because the mean of its divisors is an integer number (685881).

Almost surely, 2^7631620 is an apocalyptic number.

It is an amenable number.

7631620 is an abundant number, since it is smaller than the sum of its proper divisors (8829524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7631620 is a wasteful number, since it uses less digits than its factorization.

7631620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10359 (or 10357 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 7631620 is about 2762.5386875119. The cubic root of 7631620 is about 196.8818035778.

Adding to 7631620 its reverse (261367), we get a palindrome (7892987).

The spelling of 7631620 in words is "seven million, six hundred thirty-one thousand, six hundred twenty".