19950697 has 8 divisors (see below), whose sum is σ = 21538440. Its totient is φ = 18370560.

The previous prime is 19950691. The next prime is 19950713. The reversal of 19950697 is 79605991.

It can be written as a sum of positive squares in 4 ways, for example, as 50176 + 19900521 = 224^2 + 4461^2 .

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

It is not a de Polignac number, because 19950697 - 2⁷ = 19950569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19950691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4329 + ... + 7657.

It is an arithmetic number, because the mean of its divisors is an integer number (2692305).

Almost surely, 2^19950697 is an apocalyptic number.

It is an amenable number.

19950697 is a deficient number, since it is larger than the sum of its proper divisors (1587743).

19950697 is a wasteful number, since it uses less digits than its factorization.

19950697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803.

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 19950697 is about 4466.6203107047. The cubic root of 19950697 is about 271.2185299060.

The spelling of 19950697 in words is "nineteen million, nine hundred fifty thousand, six hundred ninety-seven".