921006697 has 16 divisors (see below), whose sum is σ = 1015560000. Its totient is φ = 830038464.

The previous prime is 921006677. The next prime is 921006707. The reversal of 921006697 is 796600129.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-921006697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (921006677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110254 + ... + 118312.

It is an arithmetic number, because the mean of its divisors is an integer number (63472500).

Almost surely, 2^921006697 is an apocalyptic number.

It is an amenable number.

921006697 is a deficient number, since it is larger than the sum of its proper divisors (94553303).

921006697 is a wasteful number, since it uses less digits than its factorization.

921006697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 921006697 is about 30348.0921476128. The cubic root of 921006697 is about 972.9434440984.

The spelling of 921006697 in words is "nine hundred twenty-one million, six thousand, six hundred ninety-seven".