6652991 has 8 divisors (see below), whose sum is σ = 6830784. Its totient is φ = 6476800.

The previous prime is 6652979. The next prime is 6652993. The reversal of 6652991 is 1992566.

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 6652991 - 2⁶ = 6652927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6652993) 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, 16391 + ... + 16791.

It is an arithmetic number, because the mean of its divisors is an integer number (853848).

Almost surely, 2^6652991 is an apocalyptic number.

6652991 is a deficient number, since it is larger than the sum of its proper divisors (177793).

6652991 is a wasteful number, since it uses less digits than its factorization.

6652991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its digits is 29160, while the sum is 38.

The square root of 6652991 is about 2579.3392564764. The cubic root of 6652991 is about 188.0784247272.

It can be divided in two parts, 665 and 2991, that multiplied together give a triangular number (1989015 = T₁₉₉₄).

The spelling of 6652991 in words is "six million, six hundred fifty-two thousand, nine hundred ninety-one".