7672821 has 8 divisors (see below), whose sum is σ = 11017440. Its totient is φ = 4721712.

The previous prime is 7672799. The next prime is 7672853. The reversal of 7672821 is 1282767.

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

It is not a de Polignac number, because 7672821 - 2¹⁴ = 7656437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7671821) 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, 98331 + ... + 98408.

It is an arithmetic number, because the mean of its divisors is an integer number (1377180).

Almost surely, 2^7672821 is an apocalyptic number.

It is an amenable number.

7672821 is a deficient number, since it is larger than the sum of its proper divisors (3344619).

7672821 is a wasteful number, since it uses less digits than its factorization.

7672821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196755.

The product of its digits is 9408, while the sum is 33.

The square root of 7672821 is about 2769.9857400355. The cubic root of 7672821 is about 197.2354713075.

The spelling of 7672821 in words is "seven million, six hundred seventy-two thousand, eight hundred twenty-one".