7721354 has 8 divisors (see below), whose sum is σ = 11595108. Its totient is φ = 3856320.

The previous prime is 7721347. The next prime is 7721359. The reversal of 7721354 is 4531277.

It can be written as a sum of positive squares in 2 ways, for example, as 7263025 + 458329 = 2695^2 + 677^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7721359) 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, 914 + ... + 4034.

Almost surely, 2^7721354 is an apocalyptic number.

7721354 is a deficient number, since it is larger than the sum of its proper divisors (3873754).

7721354 is a wasteful number, since it uses less digits than its factorization.

7721354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its digits is 5880, while the sum is 29.

The square root of 7721354 is about 2778.7324448388. The cubic root of 7721354 is about 197.6504563082.

The spelling of 7721354 in words is "seven million, seven hundred twenty-one thousand, three hundred fifty-four".