97811667 has 6 divisors (see below), whose sum is σ = 141283532. Its totient is φ = 65207772.

The previous prime is 97811657. The next prime is 97811737. The reversal of 97811667 is 76611879.

It is not a de Polignac number, because 97811667 - 2¹⁴ = 97795283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97811647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5433973 + ... + 5433990.

Almost surely, 2^97811667 is an apocalyptic number.

97811667 is a deficient number, since it is larger than the sum of its proper divisors (43471865).

97811667 is a wasteful number, since it uses less digits than its factorization.

97811667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10867969 (or 10867966 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 97811667 is about 9889.9781091770. The cubic root of 97811667 is about 460.7481005956.

The spelling of 97811667 in words is "ninety-seven million, eight hundred eleven thousand, six hundred sixty-seven".