78496690 has 16 divisors (see below), whose sum is σ = 141482880. Its totient is φ = 31356720.

The previous prime is 78496687. The next prime is 78496729. The reversal of 78496690 is 9669487.

It is a super-2 number, since 2×78496690² = 12323460681912200, 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, 3271 + ... + 12949.

It is an arithmetic number, because the mean of its divisors is an integer number (8842680).

Almost surely, 2^78496690 is an apocalyptic number.

78496690 is a deficient number, since it is larger than the sum of its proper divisors (62986190).

78496690 is a wasteful number, since it uses less digits than its factorization.

78496690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10497.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 78496690 is about 8859.8357772591. The cubic root of 78496690 is about 428.1708673752.

The spelling of 78496690 in words is "seventy-eight million, four hundred ninety-six thousand, six hundred ninety".