7649491 has 8 divisors (see below), whose sum is σ = 7958720. Its totient is φ = 7345728.

The previous prime is 7649489. The next prime is 7649513. The reversal of 7649491 is 1949467.

It is a happy number.

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 7649491 - 2¹ = 7649489 is a prime.

It is a super-3 number, since 3×7649491³ (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 (7649431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1615 + ... + 4231.

It is an arithmetic number, because the mean of its divisors is an integer number (994840).

Almost surely, 2^7649491 is an apocalyptic number.

7649491 is a deficient number, since it is larger than the sum of its proper divisors (309229).

7649491 is a wasteful number, since it uses less digits than its factorization.

7649491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733.

The product of its digits is 54432, while the sum is 40.

The square root of 7649491 is about 2765.7713209881. The cubic root of 7649491 is about 197.0353634541.

The spelling of 7649491 in words is "seven million, six hundred forty-nine thousand, four hundred ninety-one".