999745707 has 32 divisors (see below), whose sum is σ = 1442907648. Its totient is φ = 613449216.

The previous prime is 999745697. The next prime is 999745723. The reversal of 999745707 is 707547999.

It is not a de Polignac number, because 999745707 - 2⁸ = 999745451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999745727) 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, 434853 + ... + 437145.

It is an arithmetic number, because the mean of its divisors is an integer number (45090864).

Almost surely, 2^999745707 is an apocalyptic number.

999745707 is a deficient number, since it is larger than the sum of its proper divisors (443161941).

999745707 is a wasteful number, since it uses less digits than its factorization.

999745707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499.

The product of its (nonzero) digits is 5000940, while the sum is 57.

The square root of 999745707 is about 31618.7556206755. The cubic root of 999745707 is about 999.9152284807.

The spelling of 999745707 in words is "nine hundred ninety-nine million, seven hundred forty-five thousand, seven hundred seven".