20675770 has 16 divisors (see below), whose sum is σ = 38009088. Its totient is φ = 8094160.

The previous prime is 20675761. The next prime is 20675779. The reversal of 20675770 is 7757602.

It is an interprime number because it is at equal distance from previous prime (20675761) and next prime (20675779).

It is not an unprimeable number, because it can be changed into a prime (20675779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21526 + ... + 22465.

It is an arithmetic number, because the mean of its divisors is an integer number (2375568).

Almost surely, 2^20675770 is an apocalyptic number.

20675770 is a deficient number, since it is larger than the sum of its proper divisors (17333318).

20675770 is a wasteful number, since it uses less digits than its factorization.

20675770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44045.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 20675770 is about 4547.0616886073. The cubic root of 20675770 is about 274.4651643523.

The spelling of 20675770 in words is "twenty million, six hundred seventy-five thousand, seven hundred seventy".