16670531 has 2 divisors, whose sum is σ = 16670532. Its totient is φ = 16670530.

The previous prime is 16670527. The next prime is 16670579. The reversal of 16670531 is 13507661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16670531 - 2² = 16670527 is a prime.

It is a super-2 number, since 2×16670531² = 555813207643922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16670494 and 16670503.

It is not a weakly prime, because it can be changed into another prime (16675531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8335265 + 8335266.

It is an arithmetic number, because the mean of its divisors is an integer number (8335266).

Almost surely, 2^16670531 is an apocalyptic number.

16670531 is a deficient number, since it is larger than the sum of its proper divisors (1).

16670531 is an equidigital number, since it uses as much as digits as its factorization.

16670531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 16670531 is about 4082.9561594511. The cubic root of 16670531 is about 255.4562177728.

The spelling of 16670531 in words is "sixteen million, six hundred seventy thousand, five hundred thirty-one".