102697478 has 8 divisors (see below), whose sum is σ = 165895968. Its totient is φ = 47398824.

The previous prime is 102697447. The next prime is 102697499. The reversal of 102697478 is 874796201.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1974926 + ... + 1974977.

It is an arithmetic number, because the mean of its divisors is an integer number (20736996).

Almost surely, 2^102697478 is an apocalyptic number.

102697478 is a deficient number, since it is larger than the sum of its proper divisors (63198490).

102697478 is a wasteful number, since it uses less digits than its factorization.

102697478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949918.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 102697478 is about 10133.9764159978. The cubic root of 102697478 is about 468.2954370735.

The spelling of 102697478 in words is "one hundred two million, six hundred ninety-seven thousand, four hundred seventy-eight".