20770507 has 4 divisors (see below), whose sum is σ = 20779920. Its totient is φ = 20761096.

The previous prime is 20770499. The next prime is 20770517. The reversal of 20770507 is 70507702.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20770507 - 2³ = 20770499 is a prime.

It is a super-2 number, since 2×20770507² = 862827922074098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20770517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594 + ... + 6472.

It is an arithmetic number, because the mean of its divisors is an integer number (5194980).

Almost surely, 2^20770507 is an apocalyptic number.

20770507 is a deficient number, since it is larger than the sum of its proper divisors (9413).

20770507 is an equidigital number, since it uses as much as digits as its factorization.

20770507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412.

The product of its (nonzero) digits is 3430, while the sum is 28.

The square root of 20770507 is about 4557.4671693826. The cubic root of 20770507 is about 274.8837282570.

The spelling of 20770507 in words is "twenty million, seven hundred seventy thousand, five hundred seven".