2697139620 has 384 divisors, whose sum is σ = 10156769280. Its totient is φ = 588145536.

The previous prime is 2697139589. The next prime is 2697139633. The reversal of 2697139620 is 269317962.

It is a happy number.

2697139620 is a `hidden beast` number, since 2 + 6 + 9 + 7 + 13 + 9 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7041949 + ... + 7042331.

It is an arithmetic number, because the mean of its divisors is an integer number (26449920).

Almost surely, 2^2697139620 is an apocalyptic number.

2697139620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2697139620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5078384640).

2697139620 is an abundant number, since it is smaller than the sum of its proper divisors (7459629660).

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

2697139620 is a wasteful number, since it uses less digits than its factorization.

2697139620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 2697139620 is about 51933.9929140828. The cubic root of 2697139620 is about 1391.9847464143.

The spelling of 2697139620 in words is "two billion, six hundred ninety-seven million, one hundred thirty-nine thousand, six hundred twenty".