677061905 has 32 divisors (see below), whose sum is σ = 900910080. Its totient is φ = 485291520.

The previous prime is 677061877. The next prime is 677061919. The reversal of 677061905 is 509160776.

It is a de Polignac number, because none of the positive numbers 2^k-677061905 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 636404 + ... + 637466.

It is an arithmetic number, because the mean of its divisors is an integer number (28153440).

Almost surely, 2^677061905 is an apocalyptic number.

677061905 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

677061905 is a deficient number, since it is larger than the sum of its proper divisors (223848175).

677061905 is a wasteful number, since it uses less digits than its factorization.

677061905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 677061905 is about 26020.4132365341. The cubic root of 677061905 is about 878.0976056516.

The spelling of 677061905 in words is "six hundred seventy-seven million, sixty-one thousand, nine hundred five".