101649722 has 4 divisors (see below), whose sum is σ = 152474586. Its totient is φ = 50824860.

The previous prime is 101649649. The next prime is 101649827. The reversal of 101649722 is 227946101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 99181681 + 2468041 = 9959^2 + 1571^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25412429 + ... + 25412432.

Almost surely, 2^101649722 is an apocalyptic number.

101649722 is a deficient number, since it is larger than the sum of its proper divisors (50824864).

101649722 is an equidigital number, since it uses as much as digits as its factorization.

101649722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50824863.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 101649722 is about 10082.1486797210. The cubic root of 101649722 is about 466.6974182683.

The spelling of 101649722 in words is "one hundred one million, six hundred forty-nine thousand, seven hundred twenty-two".