197077680 has 60 divisors (see below), whose sum is σ = 661854960. Its totient is φ = 52553856.

The previous prime is 197077679. The next prime is 197077697. The reversal of 197077680 is 86770791.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×197077680² = 77679223908364800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136140 + ... + 137579.

It is an arithmetic number, because the mean of its divisors is an integer number (11030916).

Almost surely, 2^197077680 is an apocalyptic number.

197077680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197077680 is an abundant number, since it is smaller than the sum of its proper divisors (464777280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197077680 is a wasteful number, since it uses less digits than its factorization.

197077680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273738 (or 273729 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 197077680 is about 14038.4358103031. The cubic root of 197077680 is about 581.9412559832.

The spelling of 197077680 in words is "one hundred ninety-seven million, seventy-seven thousand, six hundred eighty".