354016721 has 32 divisors (see below), whose sum is σ = 410572800. Its totient is φ = 303125760.

The previous prime is 354016711. The next prime is 354016727. The reversal of 354016721 is 127610453.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354016721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354016727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 985940 + ... + 986298.

It is an arithmetic number, because the mean of its divisors is an integer number (12830400).

Almost surely, 2^354016721 is an apocalyptic number.

It is an amenable number.

354016721 is a deficient number, since it is larger than the sum of its proper divisors (56556079).

354016721 is a wasteful number, since it uses less digits than its factorization.

354016721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 354016721 is about 18815.3320725413. The cubic root of 354016721 is about 707.4155332908.

The spelling of 354016721 in words is "three hundred fifty-four million, sixteen thousand, seven hundred twenty-one".