61520667 has 8 divisors (see below), whose sum is σ = 88337424. Its totient is φ = 37858848.

The previous prime is 61520663. The next prime is 61520707. The reversal of 61520667 is 76602516.

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

It is not a de Polignac number, because 61520667 - 2² = 61520663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61520663) 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, 788688 + ... + 788765.

It is an arithmetic number, because the mean of its divisors is an integer number (11042178).

Almost surely, 2^61520667 is an apocalyptic number.

61520667 is a deficient number, since it is larger than the sum of its proper divisors (26816757).

61520667 is a wasteful number, since it uses less digits than its factorization.

61520667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577469.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 61520667 is about 7843.5111397894. The cubic root of 61520667 is about 394.7665490167.

The spelling of 61520667 in words is "sixty-one million, five hundred twenty thousand, six hundred sixty-seven".