651240662 has 4 divisors (see below), whose sum is σ = 976860996. Its totient is φ = 325620330.

The previous prime is 651240647. The next prime is 651240671. The reversal of 651240662 is 266042156.

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

It is a super-2 number, since 2×651240662² = 848228799684396488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162810164 + ... + 162810167.

It is an arithmetic number, because the mean of its divisors is an integer number (244215249).

Almost surely, 2^651240662 is an apocalyptic number.

651240662 is a deficient number, since it is larger than the sum of its proper divisors (325620334).

651240662 is a wasteful number, since it uses less digits than its factorization.

651240662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325620333.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 651240662 is about 25519.4173522829. The cubic root of 651240662 is about 866.7898883639.

It can be divided in two parts, 6512 and 40662, that added together give a palindrome (47174).

The spelling of 651240662 in words is "six hundred fifty-one million, two hundred forty thousand, six hundred sixty-two".