650378407 has 4 divisors (see below), whose sum is σ = 743289616. Its totient is φ = 557467200.

The previous prime is 650378369. The next prime is 650378411. The reversal of 650378407 is 704873056.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650378407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 650378407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650378467) 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, 46455594 + ... + 46455607.

It is an arithmetic number, because the mean of its divisors is an integer number (185822404).

Almost surely, 2^650378407 is an apocalyptic number.

650378407 is a deficient number, since it is larger than the sum of its proper divisors (92911209).

650378407 is an equidigital number, since it uses as much as digits as its factorization.

650378407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92911208.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 650378407 is about 25502.5176600272. The cubic root of 650378407 is about 866.4071706498.

The spelling of 650378407 in words is "six hundred fifty million, three hundred seventy-eight thousand, four hundred seven".