20077601 has 12 divisors (see below), whose sum is σ = 20990100. Its totient is φ = 19198560.

The previous prime is 20077591. The next prime is 20077627. The reversal of 20077601 is 10677002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1380625 + 18696976 = 1175^2 + 4324^2 .

It is not a de Polignac number, because 20077601 - 2⁶ = 20077537 is a prime.

It is a super-2 number, since 2×20077601² = 806220123830402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20070601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134675 + ... + 134823.

It is an arithmetic number, because the mean of its divisors is an integer number (1749175).

Almost surely, 2^20077601 is an apocalyptic number.

It is an amenable number.

20077601 is a deficient number, since it is larger than the sum of its proper divisors (912499).

20077601 is an equidigital number, since it uses as much as digits as its factorization.

20077601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 20077601 is about 4480.8036109609. The cubic root of 20077601 is about 271.7923777828.

The spelling of 20077601 in words is "twenty million, seventy-seven thousand, six hundred one".