6905977920 has 112 divisors (see below), whose sum is σ = 24362785920. Its totient is φ = 1841591808.

The previous prime is 6905977877. The next prime is 6905977943. The reversal of 6905977920 is 297795096.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391012 + ... + 408291.

Almost surely, 2^6905977920 is an apocalyptic number.

6905977920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6905977920 is an abundant number, since it is smaller than the sum of its proper divisors (17456808000).

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

6905977920 is a wasteful number, since it uses less digits than its factorization.

6905977920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799329 (or 799313 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The square root of 6905977920 is about 83102.2136889265. The cubic root of 6905977920 is about 1904.3278923562.

The spelling of 6905977920 in words is "six billion, nine hundred five million, nine hundred seventy-seven thousand, nine hundred twenty".