78006898 has 8 divisors (see below), whose sum is σ = 118325340. Its totient is φ = 38565120.

The previous prime is 78006893. The next prime is 78006899. The reversal of 78006898 is 89860087.

It can be written as a sum of positive squares in 2 ways, for example, as 77492809 + 514089 = 8803^2 + 717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78006898² = 12170152271164808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78006893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218943 + ... + 219298.

Almost surely, 2^78006898 is an apocalyptic number.

78006898 is a deficient number, since it is larger than the sum of its proper divisors (40318442).

78006898 is a wasteful number, since it uses less digits than its factorization.

78006898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438332.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 78006898 is about 8832.1513800433. The cubic root of 78006898 is about 427.2784630120.

The spelling of 78006898 in words is "seventy-eight million, six thousand, eight hundred ninety-eight".