106721576 has 24 divisors (see below), whose sum is σ = 215708430. Its totient is φ = 49207488.

The previous prime is 106721569. The next prime is 106721581. The reversal of 106721576 is 675127601.

It can be written as a sum of positive squares in 3 ways, for example, as 6120676 + 100600900 = 2474^2 + 10030^2 .

It is a super-2 number, since 2×106721576² = 22778989567847552, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104846 + ... + 105858.

Almost surely, 2^106721576 is an apocalyptic number.

It is an amenable number.

106721576 is an abundant number, since it is smaller than the sum of its proper divisors (108986854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

106721576 is an equidigital number, since it uses as much as digits as its factorization.

106721576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 106721576 is about 10330.6135345390. The cubic root of 106721576 is about 474.3338044056. Note that the first 3 decimals are identical.

The spelling of 106721576 in words is "one hundred six million, seven hundred twenty-one thousand, five hundred seventy-six".