677406154 has 4 divisors (see below), whose sum is σ = 1016109234. Its totient is φ = 338703076.

The previous prime is 677406137. The next prime is 677406161. The reversal of 677406154 is 451604776.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 350700529 + 326705625 = 18727^2 + 18075^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169351537 + ... + 169351540.

Almost surely, 2^677406154 is an apocalyptic number.

677406154 is a deficient number, since it is larger than the sum of its proper divisors (338703080).

677406154 is a wasteful number, since it uses less digits than its factorization.

677406154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338703079.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 677406154 is about 26027.0273754034. The cubic root of 677406154 is about 878.2464019941.

The spelling of 677406154 in words is "six hundred seventy-seven million, four hundred six thousand, one hundred fifty-four".