6956421 has 4 divisors (see below), whose sum is σ = 9275232. Its totient is φ = 4637612.

The previous prime is 6956401. The next prime is 6956437. The reversal of 6956421 is 1246596.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6956421 - 2¹⁷ = 6825349 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6956401) 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, 1159401 + ... + 1159406.

It is an arithmetic number, because the mean of its divisors is an integer number (2318808).

Almost surely, 2^6956421 is an apocalyptic number.

It is an amenable number.

6956421 is a deficient number, since it is larger than the sum of its proper divisors (2318811).

6956421 is a wasteful number, since it uses less digits than its factorization.

6956421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318810.

The product of its digits is 12960, while the sum is 33.

The square root of 6956421 is about 2637.5027962070. The cubic root of 6956421 is about 190.8953219713.

The spelling of 6956421 in words is "six million, nine hundred fifty-six thousand, four hundred twenty-one".