133770856 has 8 divisors (see below), whose sum is σ = 250820370. Its totient is φ = 66885424.

The previous prime is 133770839. The next prime is 133770899. The reversal of 133770856 is 658077331.

It can be written as a sum of positive squares in only one way, i.e., 107453956 + 26316900 = 10366^2 + 5130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8360671 + ... + 8360686.

Almost surely, 2^133770856 is an apocalyptic number.

It is an amenable number.

133770856 is a deficient number, since it is larger than the sum of its proper divisors (117049514).

133770856 is a wasteful number, since it uses less digits than its factorization.

133770856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16721363 (or 16721359 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 133770856 is about 11565.9351545822. The cubic root of 133770856 is about 511.4311410697.

The spelling of 133770856 in words is "one hundred thirty-three million, seven hundred seventy thousand, eight hundred fifty-six".