97767661 has 8 divisors (see below), whose sum is σ = 101543040. Its totient is φ = 94063008.

The previous prime is 97767647. The next prime is 97767679. The reversal of 97767661 is 16676779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97767661 - 2¹⁵ = 97734893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97767611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14856 + ... + 20401.

It is an arithmetic number, because the mean of its divisors is an integer number (12692880).

Almost surely, 2^97767661 is an apocalyptic number.

It is an amenable number.

97767661 is a deficient number, since it is larger than the sum of its proper divisors (3775379).

97767661 is a wasteful number, since it uses less digits than its factorization.

97767661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35363.

The product of its digits is 666792, while the sum is 49.

The square root of 97767661 is about 9887.7530814640. The cubic root of 97767661 is about 460.6789925400.

The spelling of 97767661 in words is "ninety-seven million, seven hundred sixty-seven thousand, six hundred sixty-one".