6651404 has 6 divisors (see below), whose sum is σ = 11639964. Its totient is φ = 3325700.

The previous prime is 6651401. The next prime is 6651413. The reversal of 6651404 is 4041566.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6651401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831422 + ... + 831429.

It is an arithmetic number, because the mean of its divisors is an integer number (1939994).

Almost surely, 2^6651404 is an apocalyptic number.

It is an amenable number.

6651404 is a deficient number, since it is larger than the sum of its proper divisors (4988560).

6651404 is a wasteful number, since it uses less digits than its factorization.

6651404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662855 (or 1662853 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6651404 is about 2579.0316012023. The cubic root of 6651404 is about 188.0634688376.

The spelling of 6651404 in words is "six million, six hundred fifty-one thousand, four hundred four".