7662121 has 8 divisors (see below), whose sum is σ = 8311464. Its totient is φ = 7034880.

The previous prime is 7662103. The next prime is 7662139. The reversal of 7662121 is 1212667.

It is an interprime number because it is at equal distance from previous prime (7662103) and next prime (7662139).

It can be written as a sum of positive squares in 4 ways, for example, as 44521 + 7617600 = 211^2 + 2760^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7662121 - 2⁵ = 7662089 is a prime.

It is a super-3 number, since 3×7662121³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7642121) 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, 4800 + ... + 6193.

It is an arithmetic number, because the mean of its divisors is an integer number (1038933).

Almost surely, 2^7662121 is an apocalyptic number.

It is an amenable number.

7662121 is a deficient number, since it is larger than the sum of its proper divisors (649343).

7662121 is a wasteful number, since it uses less digits than its factorization.

7662121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11051.

The product of its digits is 1008, while the sum is 25.

The square root of 7662121 is about 2768.0536483240. The cubic root of 7662121 is about 197.1437448825.

Adding to 7662121 its reverse (1212667), we get a palindrome (8874788).

The spelling of 7662121 in words is "seven million, six hundred sixty-two thousand, one hundred twenty-one".