61601507 has 8 divisors (see below), whose sum is σ = 67648512. Its totient is φ = 55629000.

The previous prime is 61601497. The next prime is 61601509. The reversal of 61601507 is 70510616.

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

It is a cyclic number.

It is not a de Polignac number, because 61601507 - 2¹⁴ = 61585123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61601509) 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, 16883 + ... + 20204.

It is an arithmetic number, because the mean of its divisors is an integer number (8456064).

Almost surely, 2^61601507 is an apocalyptic number.

61601507 is a deficient number, since it is larger than the sum of its proper divisors (6047005).

61601507 is a wasteful number, since it uses less digits than its factorization.

61601507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37249.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 61601507 is about 7848.6627523420. The cubic root of 61601507 is about 394.9393850266.

It can be divided in two parts, 6160 and 1507, that added together give a palindrome (7667).

The spelling of 61601507 in words is "sixty-one million, six hundred one thousand, five hundred seven".