61320507 has 16 divisors (see below), whose sum is σ = 87624960. Its totient is φ = 38044512.

The previous prime is 61320491. The next prime is 61320509. The reversal of 61320507 is 70502316.

It is not a de Polignac number, because 61320507 - 2⁴ = 61320491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61320509) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9457 + ... + 14562.

It is an arithmetic number, because the mean of its divisors is an integer number (5476560).

Almost surely, 2^61320507 is an apocalyptic number.

61320507 is a deficient number, since it is larger than the sum of its proper divisors (26304453).

61320507 is a wasteful number, since it uses less digits than its factorization.

61320507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24082.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 61320507 is about 7830.7411526624. The cubic root of 61320507 is about 394.3379541722.

The spelling of 61320507 in words is "sixty-one million, three hundred twenty thousand, five hundred seven".