100197747 has 12 divisors (see below), whose sum is σ = 155863344. Its totient is φ = 61660080.

The previous prime is 100197743. The next prime is 100197751. The reversal of 100197747 is 747791001.

It is an interprime number because it is at equal distance from previous prime (100197743) and next prime (100197751).

It is not a de Polignac number, because 100197747 - 2² = 100197743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100197743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428079 + ... + 428312.

It is an arithmetic number, because the mean of its divisors is an integer number (12988612).

Almost surely, 2^100197747 is an apocalyptic number.

100197747 is a deficient number, since it is larger than the sum of its proper divisors (55665597).

100197747 is a wasteful number, since it uses less digits than its factorization.

100197747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856410 (or 856407 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 36.

The square root of 100197747 is about 10009.8824668425. The cubic root of 100197747 is about 464.4646353337.

It can be divided in two parts, 10019 and 7747, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 100197747 in words is "one hundred million, one hundred ninety-seven thousand, seven hundred forty-seven".