930745621 has 16 divisors (see below), whose sum is σ = 1031430400. Its totient is φ = 834442560.

The previous prime is 930745579. The next prime is 930745639. The reversal of 930745621 is 126547039.

It is a 3-Lehmer number, since φ(930745621) divides (930745621-1)³.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 930745621 - 2⁷ = 930745493 is a prime.

It is a super-2 number, since 2×930745621² = 1732574822021351282, which contains 22 as substring.

It is a deceptive number, since it divides R_930745620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (930745661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96580 + ... + 105778.

It is an arithmetic number, because the mean of its divisors is an integer number (64464400).

It is a Poulet number, since it divides 2^930745620-1.

Almost surely, 2^930745621 is an apocalyptic number.

It is an amenable number.

930745621 is a deficient number, since it is larger than the sum of its proper divisors (100684779).

930745621 is a wasteful number, since it uses less digits than its factorization.

930745621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9436.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 930745621 is about 30508.1238525085. The cubic root of 930745621 is about 976.3607984382.

The spelling of 930745621 in words is "nine hundred thirty million, seven hundred forty-five thousand, six hundred twenty-one".