78200461 has 4 divisors (see below), whose sum is σ = 78325024. Its totient is φ = 78075900.

The previous prime is 78200453. The next prime is 78200471. The reversal of 78200461 is 16400287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78200461 - 2³ = 78200453 is a prime.

It is a super-2 number, since 2×78200461² = 12230624201225042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78200401) 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, 61335 + ... + 62596.

It is an arithmetic number, because the mean of its divisors is an integer number (19581256).

Almost surely, 2^78200461 is an apocalyptic number.

It is an amenable number.

78200461 is a deficient number, since it is larger than the sum of its proper divisors (124563).

78200461 is a wasteful number, since it uses less digits than its factorization.

78200461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124562.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 78200461 is about 8843.1024533249. The cubic root of 78200461 is about 427.6315813057.

The spelling of 78200461 in words is "seventy-eight million, two hundred thousand, four hundred sixty-one".