651677442 has 32 divisors (see below), whose sum is σ = 1404695040. Its totient is φ = 200361600.

The previous prime is 651677417. The next prime is 651677449. The reversal of 651677442 is 244776156.

It is a junction number, because it is equal to n+sod(n) for n = 651677394 and 651677403.

It is not an unprimeable number, because it can be changed into a prime (651677449) 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, 138159 + ... + 142797.

It is an arithmetic number, because the mean of its divisors is an integer number (43896720).

Almost surely, 2^651677442 is an apocalyptic number.

651677442 is an abundant number, since it is smaller than the sum of its proper divisors (753017598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651677442 is a wasteful number, since it uses less digits than its factorization.

651677442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6458.

The product of its digits is 282240, while the sum is 42.

The square root of 651677442 is about 25527.9737151228. The cubic root of 651677442 is about 866.9836272283.

The spelling of 651677442 in words is "six hundred fifty-one million, six hundred seventy-seven thousand, four hundred forty-two".