100628761 has 4 divisors (see below), whose sum is σ = 100662400. Its totient is φ = 100595124.

The previous prime is 100628741. The next prime is 100628809. The reversal of 100628761 is 167826001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100628761 - 2⁹ = 100628249 is a prime.

It is a super-2 number, since 2×100628761² = 20252295080790242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100628741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11841 + ... + 18478.

It is an arithmetic number, because the mean of its divisors is an integer number (25165600).

Almost surely, 2^100628761 is an apocalyptic number.

It is an amenable number.

100628761 is a deficient number, since it is larger than the sum of its proper divisors (33639).

100628761 is an equidigital number, since it uses as much as digits as its factorization.

100628761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33638.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 100628761 is about 10031.3887872019. The cubic root of 100628761 is about 465.1296682352.

The spelling of 100628761 in words is "one hundred million, six hundred twenty-eight thousand, seven hundred sixty-one".