78430653 has 16 divisors (see below), whose sum is σ = 132792960. Its totient is φ = 44817408.

The previous prime is 78430643. The next prime is 78430657. The reversal of 78430653 is 35603487.

It is a happy number.

It is not a de Polignac number, because 78430653 - 2⁴ = 78430637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78430657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207300 + ... + 207677.

It is an arithmetic number, because the mean of its divisors is an integer number (8299560).

Almost surely, 2^78430653 is an apocalyptic number.

It is an amenable number.

78430653 is a deficient number, since it is larger than the sum of its proper divisors (54362307).

78430653 is a wasteful number, since it uses less digits than its factorization.

78430653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414993 (or 414987 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 78430653 is about 8856.1082310460. The cubic root of 78430653 is about 428.0507644244.

The spelling of 78430653 in words is "seventy-eight million, four hundred thirty thousand, six hundred fifty-three".