99780702 has 32 divisors (see below), whose sum is σ = 231289344. Its totient is φ = 28106400.

The previous prime is 99780679. The next prime is 99780721. The reversal of 99780702 is 20708799.

It is a super-2 number, since 2×99780702² = 19912376983225608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13749 + ... + 19712.

It is an arithmetic number, because the mean of its divisors is an integer number (7227792).

Almost surely, 2^99780702 is an apocalyptic number.

99780702 is an abundant number, since it is smaller than the sum of its proper divisors (131508642).

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

99780702 is a wasteful number, since it uses less digits than its factorization.

99780702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33544.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 99780702 is about 9989.0290819479. The cubic root of 99780702 is about 463.8193379854.

The spelling of 99780702 in words is "ninety-nine million, seven hundred eighty thousand, seven hundred two".