7690997790 has 160 divisors (see below), whose sum is σ = 23809477824. Its totient is φ = 1744934400.

The previous prime is 7690997767. The next prime is 7690997801. The reversal of 7690997790 is 977990967.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 771840 + ... + 781740.

Almost surely, 2^7690997790 is an apocalyptic number.

7690997790 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7690997790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11904738912).

7690997790 is an abundant number, since it is smaller than the sum of its proper divisors (16118480034).

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

7690997790 is a wasteful number, since it uses less digits than its factorization.

7690997790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10064 (or 10055 counting only the distinct ones).

The product of its (nonzero) digits is 13502538, while the sum is 63.

The square root of 7690997790 is about 87698.3340206643. The cubic root of 7690997790 is about 1973.9109770369.

The spelling of 7690997790 in words is "seven billion, six hundred ninety million, nine hundred ninety-seven thousand, seven hundred ninety".