69976661 has 2 divisors, whose sum is σ = 69976662. Its totient is φ = 69976660.

The previous prime is 69976637. The next prime is 69976667. The reversal of 69976661 is 16667996.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64096036 + 5880625 = 8006^2 + 2425^2 .

It is a cyclic number.

It is not a de Polignac number, because 69976661 - 2¹⁴ = 69960277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69976667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34988330 + 34988331.

It is an arithmetic number, because the mean of its divisors is an integer number (34988331).

Almost surely, 2^69976661 is an apocalyptic number.

It is an amenable number.

69976661 is a deficient number, since it is larger than the sum of its proper divisors (1).

69976661 is an equidigital number, since it uses as much as digits as its factorization.

69976661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 50.

The square root of 69976661 is about 8365.2053770365. The cubic root of 69976661 is about 412.0827217096.

The spelling of 69976661 in words is "sixty-nine million, nine hundred seventy-six thousand, six hundred sixty-one".