86749620 has 24 divisors (see below), whose sum is σ = 242899104. Its totient is φ = 23133216.

The previous prime is 86749603. The next prime is 86749631. The reversal of 86749620 is 2694768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722854 + ... + 722973.

It is an arithmetic number, because the mean of its divisors is an integer number (10120796).

Almost surely, 2^86749620 is an apocalyptic number.

It is an amenable number.

86749620 is an abundant number, since it is smaller than the sum of its proper divisors (156149484).

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

86749620 is a wasteful number, since it uses less digits than its factorization.

86749620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445839 (or 1445837 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 86749620 is about 9313.9476056074. The cubic root of 86749620 is about 442.6792787551.

The spelling of 86749620 in words is "eighty-six million, seven hundred forty-nine thousand, six hundred twenty".