99722687 has 8 divisors (see below), whose sum is σ = 104380800. Its totient is φ = 95091480.

The previous prime is 99722657. The next prime is 99722717. The reversal of 99722687 is 78622799.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99722657) and next prime (99722717).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99722687 - 2¹⁰ = 99721663 is a prime.

It is a super-2 number, since 2×99722687² = 19889228604999938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99722647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1064 + ... + 14162.

It is an arithmetic number, because the mean of its divisors is an integer number (13047600).

Almost surely, 2^99722687 is an apocalyptic number.

99722687 is a deficient number, since it is larger than the sum of its proper divisors (4658113).

99722687 is a wasteful number, since it uses less digits than its factorization.

99722687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13453.

The product of its digits is 762048, while the sum is 50.

The square root of 99722687 is about 9986.1247238356. The cubic root of 99722687 is about 463.7294284968.

The spelling of 99722687 in words is "ninety-nine million, seven hundred twenty-two thousand, six hundred eighty-seven".