20077497 has 16 divisors (see below), whose sum is σ = 32448960. Its totient is φ = 12168000.

The previous prime is 20077489. The next prime is 20077511. The reversal of 20077497 is 79477002.

It is not a de Polignac number, because 20077497 - 2³ = 20077489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20077417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33504 + ... + 34097.

It is an arithmetic number, because the mean of its divisors is an integer number (2028060).

Almost surely, 2^20077497 is an apocalyptic number.

20077497 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20077497 is a deficient number, since it is larger than the sum of its proper divisors (12371463).

20077497 is a wasteful number, since it uses less digits than its factorization.

20077497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67621 (or 67615 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 20077497 is about 4480.7920058847. The cubic root of 20077497 is about 271.7919084961.

The spelling of 20077497 in words is "twenty million, seventy-seven thousand, four hundred ninety-seven".