7207668 has 36 divisors (see below), whose sum is σ = 19622148. Its totient is φ = 2217600.

The previous prime is 7207667. The next prime is 7207687. The reversal of 7207668 is 8667027.

It can be written as a sum of positive squares in 2 ways, for example, as 4717584 + 2490084 = 2172^2 + 1578^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7207661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7233 + ... + 8168.

Almost surely, 2^7207668 is an apocalyptic number.

7207668 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

7207668 is an abundant number, since it is smaller than the sum of its proper divisors (12414480).

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

7207668 is a wasteful number, since it uses less digits than its factorization.

7207668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15424 (or 15419 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 7207668 is about 2684.7100402092. The cubic root of 7207668 is about 193.1664023467.

It can be divided in two parts, 7207 and 668, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 7207668 in words is "seven million, two hundred seven thousand, six hundred sixty-eight".