87377474197 has 8 divisors (see below), whose sum is σ = 95156109720. Its totient is φ = 79749880320.

The previous prime is 87377474143. The next prime is 87377474213. The reversal of 87377474197 is 79147477378.

It can be written as a sum of positive squares in 4 ways, for example, as 886193361 + 86491280836 = 29769^2 + 294094^2 .

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 87377474197 - 2⁷ = 87377474069 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 (87377474117) 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, 37759204 + ... + 37761517.

It is an arithmetic number, because the mean of its divisors is an integer number (11894513715).

Almost surely, 2^87377474197 is an apocalyptic number.

It is an amenable number.

87377474197 is a deficient number, since it is larger than the sum of its proper divisors (7778635523).

87377474197 is a wasteful number, since it uses less digits than its factorization.

87377474197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75520823.

The product of its digits is 58084992, while the sum is 64.

The spelling of 87377474197 in words is "eighty-seven billion, three hundred seventy-seven million, four hundred seventy-four thousand, one hundred ninety-seven".