7610661381 has 8 divisors (see below), whose sum is σ = 10214751424. Its totient is φ = 5040172800.

The previous prime is 7610661379. The next prime is 7610661389. The reversal of 7610661381 is 1831660167.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7610661381 - 2¹ = 7610661379 is a prime.

It is a super-2 number, since 2×7610661381² (a number of 21 digits) 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 (7610661389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8399836 + ... + 8400741.

It is an arithmetic number, because the mean of its divisors is an integer number (1276843928).

Almost surely, 2^7610661381 is an apocalyptic number.

It is an amenable number.

7610661381 is a deficient number, since it is larger than the sum of its proper divisors (2604090043).

7610661381 is a wasteful number, since it uses less digits than its factorization.

7610661381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16800731.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 7610661381 is about 87239.1046549654. The cubic root of 7610661381 is about 1967.0140702227.

The spelling of 7610661381 in words is "seven billion, six hundred ten million, six hundred sixty-one thousand, three hundred eighty-one".