100720377 has 6 divisors (see below), whose sum is σ = 145485002. Its totient is φ = 67146912.

The previous prime is 100720369. The next prime is 100720379. The reversal of 100720377 is 773027001.

It can be written as a sum of positive squares in only one way, i.e., 92563641 + 8156736 = 9621^2 + 2856^2 .

It is not a de Polignac number, because 100720377 - 2³ = 100720369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100720377.

It is not an unprimeable number, because it can be changed into a prime (100720379) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5595568 + ... + 5595585.

Almost surely, 2^100720377 is an apocalyptic number.

It is an amenable number.

100720377 is a deficient number, since it is larger than the sum of its proper divisors (44764625).

100720377 is a wasteful number, since it uses less digits than its factorization.

100720377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11191159 (or 11191156 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 27.

The square root of 100720377 is about 10035.9542147222. The cubic root of 100720377 is about 465.2707822785.

Adding to 100720377 its reverse (773027001), we get a palindrome (873747378).

The spelling of 100720377 in words is "one hundred million, seven hundred twenty thousand, three hundred seventy-seven".