20773497 has 8 divisors (see below), whose sum is σ = 27787744. Its totient is φ = 13804128.

The previous prime is 20773469. The next prime is 20773549. The reversal of 20773497 is 79437702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20773497 - 2⁶ = 20773433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20773427) 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, 10123 + ... + 12000.

It is an arithmetic number, because the mean of its divisors is an integer number (3473468).

Almost surely, 2^20773497 is an apocalyptic number.

It is an amenable number.

20773497 is a deficient number, since it is larger than the sum of its proper divisors (7014247).

20773497 is a wasteful number, since it uses less digits than its factorization.

20773497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22439.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 20773497 is about 4557.7951906596. The cubic root of 20773497 is about 274.8969178389.

The spelling of 20773497 in words is "twenty million, seven hundred seventy-three thousand, four hundred ninety-seven".