7661301240 has 32 divisors (see below), whose sum is σ = 22983904080. Its totient is φ = 2043013632.

The previous prime is 7661301233. The next prime is 7661301251. The reversal of 7661301240 is 421031667.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 7661301198 and 7661301207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31921969 + ... + 31922208.

Almost surely, 2^7661301240 is an apocalyptic number.

It is an amenable number.

7661301240 is an abundant number, since it is smaller than the sum of its proper divisors (15322602840).

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

7661301240 is a wasteful number, since it uses less digits than its factorization.

7661301240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63844191 (or 63844187 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 7661301240 is about 87528.8594693202. The cubic root of 7661301240 is about 1971.3671391725.

The spelling of 7661301240 in words is "seven billion, six hundred sixty-one million, three hundred one thousand, two hundred forty".