101640667 has 4 divisors (see below), whose sum is σ = 102313936. Its totient is φ = 100967400.

The previous prime is 101640659. The next prime is 101640713. The reversal of 101640667 is 766046101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766046101 = 149 ⋅5141249.

It is a cyclic number.

It is not a de Polignac number, because 101640667 - 2³ = 101640659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101640967) 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, 336408 + ... + 336709.

It is an arithmetic number, because the mean of its divisors is an integer number (25578484).

Almost surely, 2^101640667 is an apocalyptic number.

101640667 is a deficient number, since it is larger than the sum of its proper divisors (673269).

101640667 is an equidigital number, since it uses as much as digits as its factorization.

101640667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673268.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 101640667 is about 10081.6996086969. The cubic root of 101640667 is about 466.6835599894.

Adding to 101640667 its reverse (766046101), we get a palindrome (867686768).

The spelling of 101640667 in words is "one hundred one million, six hundred forty thousand, six hundred sixty-seven".