677156442 has 16 divisors (see below), whose sum is σ = 1362623520. Its totient is φ = 224333712.

The previous prime is 677156383. The next prime is 677156449. The reversal of 677156442 is 244651776.

It is a junction number, because it is equal to n+sod(n) for n = 677156394 and 677156403.

It is not an unprimeable number, because it can be changed into a prime (677156449) 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, 345217 + ... + 347172.

It is an arithmetic number, because the mean of its divisors is an integer number (85163970).

Almost surely, 2^677156442 is an apocalyptic number.

677156442 is an abundant number, since it is smaller than the sum of its proper divisors (685467078).

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

677156442 is a wasteful number, since it uses less digits than its factorization.

677156442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692557.

The product of its digits is 282240, while the sum is 42.

The square root of 677156442 is about 26022.2297661057. The cubic root of 677156442 is about 878.1384728403.

The spelling of 677156442 in words is "six hundred seventy-seven million, one hundred fifty-six thousand, four hundred forty-two".