6900780 has 24 divisors (see below), whose sum is σ = 19322352. Its totient is φ = 1840192.

The previous prime is 6900767. The next prime is 6900787. The reversal of 6900780 is 870096.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6900787) 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, 57447 + ... + 57566.

It is an arithmetic number, because the mean of its divisors is an integer number (805098).

Almost surely, 2^6900780 is an apocalyptic number.

6900780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6900780 is an abundant number, since it is smaller than the sum of its proper divisors (12421572).

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

6900780 is a wasteful number, since it uses less digits than its factorization.

6900780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115025 (or 115023 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 6900780 is about 2626.9335735797. The cubic root of 6900780 is about 190.3849995833.

The spelling of 6900780 in words is "six million, nine hundred thousand, seven hundred eighty".