82780614 has 24 divisors (see below), whose sum is σ = 204980880. Its totient is φ = 23651568.

The previous prime is 82780601. The next prime is 82780651. The reversal of 82780614 is 41608728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 328369 + ... + 328620.

It is an arithmetic number, because the mean of its divisors is an integer number (8540870).

Almost surely, 2^82780614 is an apocalyptic number.

82780614 is an abundant number, since it is smaller than the sum of its proper divisors (122200266).

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

82780614 is a wasteful number, since it uses less digits than its factorization.

82780614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657004 (or 657001 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 82780614 is about 9098.3852413491. The cubic root of 82780614 is about 435.8223998206.

The spelling of 82780614 in words is "eighty-two million, seven hundred eighty thousand, six hundred fourteen".