106640537 has 2 divisors, whose sum is σ = 106640538. Its totient is φ = 106640536.

The previous prime is 106640497. The next prime is 106640543. The reversal of 106640537 is 735046601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63027721 + 43612816 = 7939^2 + 6604^2 .

It is a cyclic number.

It is not a de Polignac number, because 106640537 - 2²⁴ = 89863321 is a prime.

It is a super-2 number, since 2×106640537² = 22744408263296738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106640557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53320268 + 53320269.

It is an arithmetic number, because the mean of its divisors is an integer number (53320269).

Almost surely, 2^106640537 is an apocalyptic number.

It is an amenable number.

106640537 is a deficient number, since it is larger than the sum of its proper divisors (1).

106640537 is an equidigital number, since it uses as much as digits as its factorization.

106640537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 106640537 is about 10326.6905153587. The cubic root of 106640537 is about 474.2137122543.

The spelling of 106640537 in words is "one hundred six million, six hundred forty thousand, five hundred thirty-seven".