73998690 has 16 divisors (see below), whose sum is σ = 177596928. Its totient is φ = 19732976.

The previous prime is 73998689. The next prime is 73998731. The reversal of 73998690 is 9689937.

It is a super-2 number, since 2×73998690² = 10951612243432200, which contains 22 as substring.

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, 1233282 + ... + 1233341.

It is an arithmetic number, because the mean of its divisors is an integer number (11099808).

Almost surely, 2^73998690 is an apocalyptic number.

73998690 is an abundant number, since it is smaller than the sum of its proper divisors (103598238).

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

73998690 is a wasteful number, since it uses less digits than its factorization.

73998690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466633.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 73998690 is about 8602.2491245023. The cubic root of 73998690 is about 419.8311679695.

The spelling of 73998690 in words is "seventy-three million, nine hundred ninety-eight thousand, six hundred ninety".