70972877 has 4 divisors (see below), whose sum is σ = 71010720. Its totient is φ = 70935036.

The previous prime is 70972873. The next prime is 70972879. The reversal of 70972877 is 77827907.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77827907 = 139 ⋅559913.

It is a cyclic number.

It is not a de Polignac number, because 70972877 - 2² = 70972873 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70972873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15953 + ... + 19910.

It is an arithmetic number, because the mean of its divisors is an integer number (17752680).

Almost surely, 2^70972877 is an apocalyptic number.

It is an amenable number.

70972877 is a deficient number, since it is larger than the sum of its proper divisors (37843).

70972877 is a wasteful number, since it uses less digits than its factorization.

70972877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37842.

The product of its (nonzero) digits is 345744, while the sum is 47.

The square root of 70972877 is about 8424.5401654927. The cubic root of 70972877 is about 414.0290398698.

The spelling of 70972877 in words is "seventy million, nine hundred seventy-two thousand, eight hundred seventy-seven".