920780626 has 4 divisors (see below), whose sum is σ = 1381170942. Its totient is φ = 460390312.

The previous prime is 920780617. The next prime is 920780687. The reversal of 920780626 is 626087029.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 626087029 = 239 ⋅2619611.

It can be written as a sum of positive squares in only one way, i.e., 912946225 + 7834401 = 30215^2 + 2799^2 .

It is a super-2 number, since 2×920780626² = 1695673922433903752, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230195155 + ... + 230195158.

Almost surely, 2^920780626 is an apocalyptic number.

920780626 is a deficient number, since it is larger than the sum of its proper divisors (460390316).

920780626 is a wasteful number, since it uses less digits than its factorization.

920780626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460390315.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 920780626 is about 30344.3672862032. The cubic root of 920780626 is about 972.8638311064.

The spelling of 920780626 in words is "nine hundred twenty million, seven hundred eighty thousand, six hundred twenty-six".