7660491 has 4 divisors (see below), whose sum is σ = 10213992. Its totient is φ = 5106992.

The previous prime is 7660469. The next prime is 7660507. The reversal of 7660491 is 1940667.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1940667 = 3 ⋅646889.

It is a cyclic number.

It is not a de Polignac number, because 7660491 - 2⁵ = 7660459 is a prime.

It is a super-2 number, since 2×7660491² = 117366244722162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7660291) 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, 1276746 + ... + 1276751.

It is an arithmetic number, because the mean of its divisors is an integer number (2553498).

Almost surely, 2^7660491 is an apocalyptic number.

7660491 is a deficient number, since it is larger than the sum of its proper divisors (2553501).

7660491 is a wasteful number, since it uses less digits than its factorization.

7660491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553500.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 7660491 is about 2767.7592019538. The cubic root of 7660491 is about 197.1297641108.

The spelling of 7660491 in words is "seven million, six hundred sixty thousand, four hundred ninety-one".