61002015 has 8 divisors (see below), whose sum is σ = 97603248. Its totient is φ = 32534400.

The previous prime is 61001977. The next prime is 61002023. The reversal of 61002015 is 51020016.

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

It is not a de Polignac number, because 61002015 - 2⁹ = 61001503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 4066801 = 61002015 / (6 + 1 + 0 + 0 + 2 + 0 + 1 + 5).

It is a junction number, because it is equal to n+sod(n) for n = 61001985 and 61002003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2033386 + ... + 2033415.

It is an arithmetic number, because the mean of its divisors is an integer number (12200406).

Almost surely, 2^61002015 is an apocalyptic number.

61002015 is a deficient number, since it is larger than the sum of its proper divisors (36601233).

61002015 is a wasteful number, since it uses less digits than its factorization.

61002015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066809.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 61002015 is about 7810.3786719979. The cubic root of 61002015 is about 393.6540527116.

The spelling of 61002015 in words is "sixty-one million, two thousand, fifteen".