61499007 has 20 divisors (see below), whose sum is σ = 92695680. Its totient is φ = 40630464.

The previous prime is 61499003. The next prime is 61499017. The reversal of 61499007 is 70099416.

It is not a de Polignac number, because 61499007 - 2² = 61499003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61499003) 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 19 ways as a sum of consecutive naturals, for example, 5794 + ... + 12512.

It is an arithmetic number, because the mean of its divisors is an integer number (4634784).

Almost surely, 2^61499007 is an apocalyptic number.

61499007 is a deficient number, since it is larger than the sum of its proper divisors (31196673).

61499007 is a wasteful number, since it uses less digits than its factorization.

61499007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6844 (or 6835 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 61499007 is about 7842.1302590559. The cubic root of 61499007 is about 394.7202141964.

The spelling of 61499007 in words is "sixty-one million, four hundred ninety-nine thousand, seven".