758068921 has 4 divisors (see below), whose sum is σ = 758124112. Its totient is φ = 758013732.

The previous prime is 758068919. The next prime is 758068943. The reversal of 758068921 is 129860857.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 129860857 = 7 ⋅18551551.

It is a cyclic number.

It is not a de Polignac number, because 758068921 - 2¹ = 758068919 is a prime.

It is a super-2 number, since 2×758068921² = 1149336977972208482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (758068901) 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, 11026 + ... + 40468.

It is an arithmetic number, because the mean of its divisors is an integer number (189531028).

Almost surely, 2^758068921 is an apocalyptic number.

It is an amenable number.

758068921 is a deficient number, since it is larger than the sum of its proper divisors (55191).

758068921 is a wasteful number, since it uses less digits than its factorization.

758068921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55190.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 758068921 is about 27533.0514291460. The cubic root of 758068921 is about 911.8069482274.

The spelling of 758068921 in words is "seven hundred fifty-eight million, sixty-eight thousand, nine hundred twenty-one".