745787986 has 4 divisors (see below), whose sum is σ = 1118681982. Its totient is φ = 372893992.

The previous prime is 745787971. The next prime is 745787993. The reversal of 745787986 is 689787547.

745787986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 689787547 = 2243 ⋅307529.

It can be written as a sum of positive squares in only one way, i.e., 603439225 + 142348761 = 24565^2 + 11931^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186446995 + ... + 186446998.

Almost surely, 2^745787986 is an apocalyptic number.

745787986 is a deficient number, since it is larger than the sum of its proper divisors (372893996).

745787986 is a wasteful number, since it uses less digits than its factorization.

745787986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372893995.

The product of its digits is 23708160, while the sum is 61.

The square root of 745787986 is about 27309.1190996707. The cubic root of 745787986 is about 906.8562719512.

The spelling of 745787986 in words is "seven hundred forty-five million, seven hundred eighty-seven thousand, nine hundred eighty-six".